Removes unnecessary branches matrix

Author: picandocodigo

.github/workflows/report.yml

@@ -13,13 +13,6 @@ jobs:
     env:
       STACK_VERSION: 9.0.0-SNAPSHOT
       BRANCH: 'main' # Branch for downloading the specs
-    strategy:
-      matrix:
-        branch:
-          - 'main'
-          - '8.x'
-          - '8.17'
-          - '8.16'
     steps:
       - uses: actions/checkout@v4
         with: