Delete docs build

.github/workflows/docs.yml

@@ -1,31 +0,0 @@
-name: Wagtail Docs
-
-on:
-  push:
-    paths:
-    - 'docs/**'
-  pull_request:
-    paths:
-    - 'docs/**'
-
-
-jobs:
-  build-docs:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: Set up Python 3.8
-        uses: actions/setup-python@v2
-        with:
-          python-version: 3.8
-      - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install -e .[docs]
-      - name: Make the docs
-        run: cd docs && make json
-      - name: Upload the docs
-        uses: actions/upload-artifact@v2
-        with:
-          name: jsondocs
-          path: docs/_build/json