chore: Modify github CI (#183)

Author: zhenlei520

.github/workflows/package_push_nuget.org.yml

@@ -20,8 +20,6 @@ jobs:
       with:
         dotnet-version: '6.0.x'
         include-prerelease: true
-    - name: dependencies
-      run: git clone -b $GITHUB_REF_NAME https://github.com/masastack/MASA.BuildingBlocks.git ./src/BuildingBlocks/MASA.BuildingBlocks
 
     - name: restore
       run: dotnet restore