Clean up labels on close

.github/workflows/clean-closed.yml

@@ -0,0 +1,32 @@
+#
+# clean-closed.yml
+# Remove obsolete labels when an Issue or PR is closed
+#
+
+name: Clean Closed
+
+on:
+  pull_request:
+    types: [closed]
+  issues:
+    types: [closed]
+
+jobs:
+  remove_label:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Remove Labels
+        uses: actions-ecosystem/action-remove-labels@v1
+        with:
+          labels: |
+            S: Don't Merge
+            S: Please Merge
+            S: Please Test
+            help wanted
+            Needs: Discussion
+            Needs: Documentation
+            Needs: More Data
+            Needs: Patch
+            Needs: Testing
+            Needs: Work