Update premerge.yml

rm operation to cleanup and recheck

.github/workflows/premerge.yml

@@ -36,11 +36,8 @@ jobs:
       run: |
         # Workaround to provide additional free space for builds, even Maximize build space not enough.
         #   https://github.com/actions/virtual-environments/issues/2840
-        sudo apt-get update -y
-        sudo apt-get remove -y '^dotnet-.*' 'php.*' azure-cli google-cloud-sdk google-chrome-stable firefox powershell mono-devel
-        sudo apt-get autoremove -y
-        sudo apt-get clean
         sudo rm -rf /usr/share/dotnet /usr/local/lib/android /opt/ghc /usr/local/share/boost "$AGENT_TOOLSDIRECTORY"
+        df -h
     - name: Login to GitHub Container Registry
       uses: docker/login-action@v2
       with: