Delete .github/workflows/semgrep.yml (#195)

.github/workflows/semgrep.yml

@@ -1,25 +0,0 @@
-name: Semgrep
-on:
-  workflow_dispatch: {}
-  pull_request: {}
-  push:
-    branches:
-      - main
-      - master
-    paths:
-      - .github/workflows/semgrep.yml
-  schedule:
-    # random HH:MM to avoid a load spike on GitHub Actions at 00:00
-    - cron: '15 21 * * *'
-jobs:
-  semgrep:
-    name: semgrep/ci
-    runs-on: ubuntu-20.04
-    env:
-      SEMGREP_APP_TOKEN: ${{ secrets.SEMGREP_APP_TOKEN }}
-    container:
-      image: returntocorp/semgrep
-    if: (github.actor != 'dependabot[bot]')
-    steps:
-      - uses: actions/checkout@v3
-      - run: semgrep ci