Revert "Add workflow to update node_modules on master"

This reverts commit 31483bd47f.

.github/workflows/master.yml

@@ -1,42 +0,0 @@
-name: master
-
-on:
-  push:
-    branches:
-      - 'master'
-    paths:
-      - 'package.*'
-      - '.github/workflows/master.yml'
-
-jobs:
-  prune:
-    runs-on: ubuntu-latest
-    steps:
-      -
-        name: Checkout
-        uses: actions/checkout@v1
-      -
-        # https://github.com/actions/checkout/issues/6
-        name: Fix detached HEAD
-        run: git checkout ${GITHUB_REF#refs/heads/}
-      -
-        name: Prune prod
-        run: |
-          rm -rf node_modules
-          npm install --production
-      -
-        name: Set up Git
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: |
-          git config user.name "${GITHUB_ACTOR}"
-          git config user.email "${GITHUB_ACTOR}@users.noreply.github.com"
-          git remote set-url origin https://x-access-token:${GITHUB_TOKEN}@github.com/${GITHUB_REPOSITORY}.git
-      -
-        name: Commit and push changes
-        run: |
-          git add .
-          if output=$(git status --porcelain) && [ ! -z "$output" ]; then
-            git commit -m 'Update node_modules'
-            git push
-          fi