ci(workflow): 移除不再需要的Flutter容器和版本检查步骤

.gitea/workflows/docker.yml

@@ -79,8 +79,6 @@ jobs:
   build:
     runs-on: windows-latest
     needs: build-libcore
-    container:
-      image: docker.io/cirrusci/flutter:3.22.2 
     steps:
     - name: 🔧 Add Git to PATH (Windows)
       if: ${{ runner.os == 'Windows' }}
@@ -196,13 +194,6 @@ jobs:
         flutter-version: '3.24.3'
         channel: 'stable'
 
-    - name: Checkout Flutter 3.35.5
-      shell: powershell
-      run: |
-        Set-Location $env:FLUTTER_ROOT
-        git fetch --tags
-        git checkout 3.35.5
-        flutter --version
     - name: Enable Windows desktop
       run: flutter config --enable-windows-desktop