remove webpack action

.github/workflows/webpack.yml

@@ -1,28 +0,0 @@
-name: NodeJS with Webpack
-
-on:
-  push:
-    branches: [ "master" ]
-  pull_request:
-    branches: [ "master" ]
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    strategy:
-      matrix:
-        node-version: [18.x, 20.x, 22.x]
-
-    steps:
-    - uses: actions/checkout@v4
-
-    - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v4
-      with:
-        node-version: ${{ matrix.node-version }}
-
-    - name: Build
-      run: |
-        npm install
-        npx webpack