remove GitHub Actions build

.github/workflows/build.yml

@@ -1,60 +0,0 @@
-name: Build and Release
-
-on:
-  push:
-    branches: [main]
-    tags:
-      - 'v*'
-  pull_request:
-    branches: [main]
-
-jobs:
-  build:
-    strategy:
-      matrix:
-        include:
-          - os: macos-latest
-            arch: x64
-            target: mac-x64
-          - os: macos-latest
-            arch: arm64
-            target: mac-arm64
-          - os: windows-latest
-            arch: x64
-            target: win-x64
-          - os: ubuntu-latest
-            arch: x64
-            target: linux-x64
-
-    runs-on: ${{ matrix.os }}
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - uses: actions/setup-node@v4
-        with:
-          node-version: 22
-          cache: 'npm'
-
-      - name: Generate icons
-        run: python3 scripts/generate-icons.py
-
-      - name: Install dependencies
-        run: npm ci
-
-      - name: Build
-        run: npm run build
-
-      - name: Package
-        run: npx electron-builder --${{ matrix.target == 'win-x64' && 'win' || contains(matrix.target, 'mac') && 'mac' || 'linux' }} --${{ matrix.arch }}
-        env:
-          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Upload artifacts
-        uses: actions/upload-artifact@v4
-        with:
-          name: omniemu-${{ matrix.target }}
-          path: release/*.dmg
-          if-no-files-found: ignore
-
-