Revert "enforcing labels in PR before merge" (#7366)

Reverts marimo-team/marimo#7315

.github/workflows/labeler.yml

@@ -1,12 +1,8 @@
 name: 🏷️ Pull Request Labeler
 
 # Label pull requests based on config in .github/labeler.yml
-# Then enforce that at least one label is selected
 
-on:
-  pull_request_target:
-  pull_request:
-    types: [labeled, unlabeled, opened, edited, synchronize]
+on: [pull_request_target]
 
 permissions:
   contents: read
@@ -14,19 +10,8 @@ permissions:
 
 jobs:
   label:
-    if: github.event_name == 'pull_request_target'
     runs-on: ubuntu-latest
     steps:
       - uses: actions/labeler@v5
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
-
-  enforce-label:
-    needs: [label]
-    if: always() && (needs.label.result == 'success' || needs.label.result == 'skipped')
-    runs-on: ubuntu-latest
-    steps:
-      - uses: yogevbd/enforce-label-action@2.2.2
-        with:
-          REQUIRED_LABELS_ANY: "enhancement,bug,documentation,internal,preview,other"
-          REQUIRED_LABELS_ANY_DESCRIPTION: "Select at least one label ['enhancement','bug','documentation','internal','preview','other']"