Update ci.yml

Author: Motobug

.github/workflows/ci.yml

@@ -216,7 +216,6 @@ jobs:
         rm -rf /usr/share/dotnet
         rm -rf /opt/ghc
         rm -rf /usr/local/share/boost
-        apt-get clean
         echo "Disk space after cleanup:"
         df -h
     - name: Setup Packages