Update check_file_size.yml workflow configuration

.github/workflows/check_file_size.yml

@@ -1,11 +1,8 @@
 name: Check File Size
-on: # or directly `on: [push]` to run the action on every push on any branch
+on:
     push:
         branches: [main]
 
-    # to run this workflow manually from the Actions tab
-    workflow_dispatch:
-
 jobs:
     sync-to-hub:
         runs-on: ubuntu-latest