Removing GitHub Actions pipeline as we use Jenkins anyways

.github/workflows/master-betterzon.yml

@@ -1,34 +0,0 @@
-
-name: Test
-on:
-  push:
-    branches:
-      - master
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        node-version: [12.x]
-
-    steps:
-      - uses: actions/checkout@v1
-
-      - name: Cache node modules
-        uses: actions/cache@v1
-        with:
-          path: ~/.npm
-          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
-          restore-keys: |
-            ${{ runner.os }}-node-
-      - name: Node ${{ matrix.node-version }}
-        uses: actions/setup-node@v1
-        with:
-          node-version: ${{ matrix.node-version }}
-
-      - name: npm ci and npm run build
-        run: |
-          cd Frontend
-          npm ci
-          npm run build