chore: remove build-linux job

Author: lijy91

.github/workflows/build.yml

@@ -7,16 +7,6 @@ on:
     branches: [main]
 
 jobs:
-  build-linux:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - uses: subosito/flutter-action@v2
-      - run: |
-          sudo apt-get update -y
-          sudo apt-get install -y clang cmake ninja-build pkg-config libgtk-3-dev liblzma-dev
-      - run: flutter config --enable-linux-desktop
-      - run: cd example && flutter build linux -v
   build-macos:
     runs-on: macos-latest
     steps: