Remove results workflow from modgc

Merged: https://github.com/ruby/ruby/pull/12630

.github/workflows/modgc.yml

@@ -175,16 +175,6 @@ jobs:
           SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
         if: ${{ failure() }}
 
-  result:
-    if: ${{ always() }}
-    name: ${{ github.workflow }} result
-    runs-on: ubuntu-latest
-    needs: [check]
-    steps:
-      - run: exit 1
-        working-directory:
-        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
-
 defaults:
   run:
     working-directory: build