chore: remove old workflow files (prevent phantom drift)

.gitea/workflows/build.yaml

@@ -1,33 +0,0 @@
-name: Build Package
-on:
-  push:
-    tags:
-      - 'v*'
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          submodules: recursive
-
-      - name: Build package ZIP
-        run: |
-          cd source
-          # Create individual package ZIPs
-          for pkg_dir in packages/*/; do
-            pkg_name=$(basename "$pkg_dir")
-            cd "$pkg_dir"
-            zip -r "../../${pkg_name}.zip" . -x "*.git*"
-            cd ../..
-          done
-          # Create main package ZIP with all sub-packages + manifest
-          zip -j "pkg_mokosuitefield.zip" pkg_*.xml script.php updates.xml *.zip 2>/dev/null || true
-          ls -la *.zip
-
-      - name: Create Release
-        uses: softprops/action-gh-release@v1
-        with:
-          files: source/pkg_mokosuitefield.zip
-          generate_release_notes: true