Remove permissions section from struct-generate workflow

Author: httpdss

.github/workflows/struct-generate.yaml

@@ -53,10 +53,6 @@ on:
         description: 'GitHub token'
         required: true
 
-permissions:
-  contents: write
-  pull-requests: write
-
 jobs:
   run:
     runs-on: ${{ inputs.runs_on }}