应用: 短信
任务: 打开短信，删除所有带‘促销’字样的短信
操作步骤:
step_id: 0
action: CLICK
step_id: 1
action: CLICK
step_id: 2
action: TYPE
type_text: 促销
step_id: 3
action: CLICK
step_id: 4
action: CLICK