Update build-openwrt.yml

Author: hubbylei

.github/workflows/build-openwrt.yml

@@ -49,11 +49,8 @@ jobs:
       env:
         DEBIAN_FRONTEND: noninteractive
       run: |
-        sudo rm -rf /etc/apt/sources.list.d/* /usr/share/dotnet /usr/local/lib/android /opt/ghc
         sudo -E apt-get -qq update
         sudo -E apt-get -qq install $(cat ${GITHUB_WORKSPACE}/depends-ubuntu-2004)
-        sudo -E apt-get -qq autoremove --purge
-        sudo -E apt-get -qq clean
         sudo timedatectl set-timezone "$TZ"
 
     - name: Clone source code