.github: Drop npm-update workflow

.github/workflows/npm-update.yml

@@ -1,26 +0,0 @@
-name: npm-update
-on:
-  schedule:
-    - cron: '0 3 * * *'
-  workflow_dispatch:
-jobs:
-  npm-update:
-    runs-on: ubuntu-20.04
-    steps:
-      - name: Set up dependencies
-        run: |
-          sudo apt update
-          sudo apt install -y npm make
-
-      - name: Set up configuration and secrets
-        run: |
-          printf '[user]\n\tname = Cockpit Project\n\temail=cockpituous@gmail.com\n' > ~/.gitconfig
-          echo '${{ secrets.GITHUB_TOKEN }}' > ~/.config/github-token
-
-      - name: Clone repository
-        uses: actions/checkout@v2
-
-      - name: Run npm-update bot
-        run: |
-          tools/make-bots
-          bots/npm-update