Revert "[ci] Add release github action (#4061)"

This reverts commit 04beebf2e3f6ae3fd6dde80308a948f9d2dd6f62.
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
deleted file mode 100644
index f274a79..0000000
--- a/.github/workflows/release.yml
+++ /dev/null
@@ -1,48 +0,0 @@
-name: release
-on:
-  push:
-    branches:
-      - master
-
-jobs:
-  release:
-    name: release
-    runs-on: ubuntu-latest
-    steps:
-    - name: "Install Flutter"
-      # Github Actions don't support templates so it is hard to share this snippet with another action
-      # If we eventually need to use this in more workflow, we could create a shell script that contains this
-      # snippet.
-      run: |
-        cd $HOME
-        git clone https://github.com/flutter/flutter.git --depth 1 -b stable _flutter
-        echo "$HOME/_flutter/bin" >> $GITHUB_PATH
-        cd $GITHUB_WORKSPACE
-    # Checks out a copy of the repo.
-    - name: Check out code
-      uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f
-      with:
-        fetch-depth: 0 # Fetch all history so the tool can get all the tags to determine version.
-    - name: Set up tools
-      run: dart pub get
-      working-directory: ${{ github.workspace }}/script/tool
-
-    # # This workflow should be the last to run. So wait for all the other tests to succeed.
-    - name: Wait on all tests
-      uses: lewagon/wait-on-check-action@1b1630e169116b58a4b933d5ad7effc46d3d312d
-      with:
-        ref: ${{ github.sha }}
-        running-workflow-name: 'release'
-        repo-token: ${{ secrets.GITHUB_TOKEN }}
-        wait-interval: 10 # seconds
-        allowed-conclusions: success
-
-    - name: run release
-      run: |
-        git config --global user.name ${{ secrets.USER_NAME }}
-        git config --global user.email ${{ secrets.USER_EMAIL }}
-        dart ./script/tool/lib/src/main.dart publish-plugin --all-changed --base-sha=HEAD~ --skip-confirmation --remote=origin
-      env: {PUB_CREDENTIALS: "${{ secrets.PUB_CREDENTIALS }}"}
-
-    env:
-      DEFAULT_BRANCH: master