instruction: I want to delete the unnecessary screenshot images from the Gallery app.

previous_actions: 

active_application: Gallery

screen_description: windows {
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    right: 1080
    bottom: 128
  }
  id: 8
  layer: 1
  window_type: TYPE_SYSTEM
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      class_name: "android.widget.FrameLayout"
      depth: 1
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    nodes {
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        bottom: 128
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      class_name: "android.widget.FrameLayout"
      depth: 1
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        bottom: 128
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      class_name: "android.widget.FrameLayout"
      depth: 2
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      class_name: "android.widget.LinearLayout"
      depth: 3
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        bottom: 128
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        bottom: 128
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      class_name: "android.view.View"
      depth: 4
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        top: 1
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        bottom: 128
      }
      class_name: "android.widget.FrameLayout"
      depth: 4
    }
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        top: 1
        right: 441
        bottom: 128
      }
      class_name: "android.widget.FrameLayout"
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        top: 1
        right: 441
        bottom: 128
      }
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      depth: 6
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        bottom: 128
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      depth: 6
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      bounds_in_screen {
        left: 50
        top: 1
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        bottom: 128
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      class_name: "android.widget.TextView"
      content_description: "11:59 PM"
      text: "11:59"
      depth: 7
    }
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        top: 1
        right: 441
        bottom: 128
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    nodes {
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        top: 1
        right: 1006
        bottom: 128
      }
      class_name: "android.widget.LinearLayout"
      content_description: "Battery charging, 100 percent."
      depth: 7
    }
    nodes {
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        top: 1
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        bottom: 128
      }
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        top: 35
        right: 970
        bottom: 93
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      class_name: "android.widget.FrameLayout"
      content_description: "Wifi signal full."
      depth: 8
    }
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        left: 986
        top: 47
        right: 1006
        bottom: 81
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      class_name: "android.widget.ImageView"
      depth: 8
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        left: 151
        top: 1
        right: 209
        bottom: 128
      }
      class_name: "android.widget.ImageView"
      content_description: "Plantum notification: Chinese evergreens: Watering"
      depth: 9
    }
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        top: 1
        right: 267
        bottom: 128
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      class_name: "android.widget.ImageView"
      content_description: "Weather notification: 31°"
      depth: 9
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      bounds_in_screen {
        left: 267
        top: 1
        right: 325
        bottom: 128
      }
      class_name: "android.widget.ImageView"
      content_description: "Weather&Radar notification: Share your Joy! "
      depth: 9
    }
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        left: 325
        top: 1
        right: 383
        bottom: 128
      }
      class_name: "android.widget.ImageView"
      content_description: "Gmail notification: 3 new messages"
      depth: 9
    }
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        left: 383
        top: 1
        right: 441
        bottom: 128
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      class_name: "android.widget.ImageView"
      content_description: "Gmail notification: 2 new messages"
      depth: 9
    }
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      bounds_in_screen {
        left: 401
        top: 1
        right: 441
        bottom: 128
      }
      class_name: "android.widget.ImageView"
      content_description: "Google News notification: CBS News"
      depth: 9
    }
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        right: 441
        bottom: 128
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      class_name: "android.widget.ImageView"
      content_description: "System update notification: Android 13"
      depth: 9
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        left: 401
        top: 1
        right: 441
        bottom: 128
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      class_name: "android.widget.ImageView"
      content_description: "Google notification: Tomorrow in Bandhwari: Partly cloudy"
      depth: 9
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        top: 1
        right: 441
        bottom: 128
      }
      class_name: "android.widget.ImageView"
      content_description: "Google notification: Editorji"
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        bottom: 128
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      class_name: "android.widget.ImageView"
      content_description: "Google notification: DNA India"
      depth: 9
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        bottom: 128
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      class_name: "android.widget.ImageView"
      content_description: "Google notification: Google Pixel 7 vs Google Pixel 8: Big Upgrades?"
      depth: 9
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        top: 44
        right: 970
        bottom: 83
      }
      class_name: "android.widget.ImageView"
      depth: 11
    }
  }
}
windows {
  bounds_in_screen {
    right: 1080
    bottom: 2400
  }
  id: 10173
  title: "Gallery"
  window_type: TYPE_APPLICATION
  is_active: true
  is_focused: true
  tree {
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        right: 1080
        bottom: 2400
      }
      class_name: "android.widget.FrameLayout"
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        bottom: 2337
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      class_name: "android.widget.LinearLayout"
      depth: 1
    }
    nodes {
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        right: 1080
        bottom: 128
      }
      class_name: "android.view.View"
      depth: 1
    }
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        right: 1080
        bottom: 2400
      }
      class_name: "android.view.View"
      depth: 1
    }
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        right: 1080
        bottom: 2337
      }
      class_name: "android.widget.FrameLayout"
      depth: 2
    }
    nodes {
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        right: 1080
        bottom: 2337
      }
      class_name: "android.widget.FrameLayout"
      depth: 3
    }
    nodes {
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        right: 1080
        bottom: 2337
      }
      class_name: "android.widget.FrameLayout"
      depth: 4
    }
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        bottom: 2337
      }
      class_name: "android.widget.ScrollView"
      is_scrollable: true
      depth: 5
    }
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        top: 128
        right: 1080
        bottom: 334
      }
      class_name: "android.widget.LinearLayout"
      depth: 6
    }
    nodes {
      bounds_in_screen {
        top: 334
        right: 1080
        bottom: 2337
      }
      class_name: "android.widget.FrameLayout"
      depth: 6
    }
    nodes {
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        left: 983
        top: 334
        right: 1080
        bottom: 2190
      }
      class_name: "android.widget.FrameLayout"
      depth: 6
    }
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        bottom: 334
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      class_name: "android.view.ViewGroup"
      depth: 7
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        right: 1080
        bottom: 2337
      }
      class_name: "android.widget.FrameLayout"
      depth: 7
    }
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        right: 147
        bottom: 275
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      class_name: "android.widget.ImageButton"
      content_description: "Back"
      is_clickable: true
      is_focusable: true
      depth: 8
      tooltip_text: "Back"
    }
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        top: 170
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      class_name: "android.support.v7.widget.LinearLayoutCompat"
      depth: 8
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        bottom: 2337
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      class_name: "android.widget.FrameLayout"
      depth: 8
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        top: 170
        right: 316
        bottom: 249
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      class_name: "android.widget.TextView"
      text: "Camera"
      depth: 9
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      class_name: "android.widget.TextView"
      text: "1 item · 8.8 kB"
      depth: 9
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    nodes {
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        top: 138
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        bottom: 264
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      class_name: "android.widget.ImageView"
      content_description: "More options"
      is_clickable: true
      is_focusable: true
      is_long_clickable: true
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      tooltip_text: "More options"
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        bottom: 460
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      class_name: "android.widget.TextView"
      text: "September"
      depth: 10
    }
    nodes {
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        top: 463
        right: 270
        bottom: 730
      }
      class_name: "android.view.View"
      content_description: "Photo taken on Sep 22, 2023 4:46:02 PM."
      is_clickable: true
      is_focusable: true
      is_long_clickable: true
      depth: 10
    }
  }
}


assistant: !FUNCTIONCALL{"name": "navigate_back", "parameters": {}}