Remove unused publish step

.github/workflows/publish.yml

@@ -1,39 +0,0 @@
----
-name: Publish
-
-'on':
-  push:
-    tags:
-      - 'v[0-9]+.[0-9]+.[0-9]+'
-      - 'v[0-9]+.[0-9]+.[0-9]+-pre[0-9]+'
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        node-version: [14.x]
-    steps:
-      - name: Check out code
-        uses: actions/checkout@v2
-
-      - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v2
-        with:
-          node-version: ${{ matrix.node-version }}
-          registry-url: https://registry.npmjs.org/
-
-      - name: Install
-        run: |
-          yarn install --frozen-lockfile
-      - name: Build
-        run: |
-          yarn build
-      - name: Test
-        run: |
-          yarn test:coverage
-      - name: Push release to npm (public)
-        env:
-          NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}
-        run: |
-          yarn publish --access public .