Revert "(beta) fix apt mirror issue"

This reverts commit 8bae341.

openwrt-ci.yml

@@ -22,7 +22,7 @@ jobs:
 
   build:
 
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
 
     steps:
 
@@ -36,26 +36,8 @@ jobs:
           DEBIAN_FRONTEND: noninteractive
         run: |
           docker rmi `docker images -q`
-          sudo rm -rf /usr/share/dotnet /etc/mysql /etc/php /etc/apt/sources.list.d
-
-          # modify apt mirrors
-          cat > /etc/apt/sources.list <<EOF
-          deb http://archive.ubuntu.com/ubuntu/ boinc main restricted universe multiverse
-          # deb-src http://archive.ubuntu.com/ubuntu/ boinc main restricted universe multiverse
-
-          deb http://archive.ubuntu.com/ubuntu/ boinc-security main restricted universe multiverse
-          # deb-src http://archive.ubuntu.com/ubuntu/ boinc-security main restricted universe multiverse
-
-          deb http://archive.ubuntu.com/ubuntu/ boinc-updates main restricted universe multiverse
-          # deb-src http://archive.ubuntu.com/ubuntu/ boinc-updates main restricted universe multiverse
-
-          # deb http://archive.ubuntu.com/ubuntu/ boinc-proposed main restricted universe multiverse
-          # deb-src http://archive.ubuntu.com/ubuntu/ boinc-proposed main restricted universe multiverse
-
-          deb http://archive.ubuntu.com/ubuntu/ boinc-backports main restricted universe multiverse
-          # deb-src http://archive.ubuntu.com/ubuntu/ boinc-backports main restricted universe multiverse
-          EOF
-
+          echo "Deleting files, please wait ..."
+          sudo rm -rf /usr/share/dotnet /etc/mysql /etc/php
           sudo -E apt-get -y purge azure-cli ghc* zulu* hhvm llvm* firefox google* dotnet* powershell openjdk* mysql* php*
           sudo -E apt-get update
           sudo -E apt-get -y install build-essential asciidoc binutils bzip2 gawk gettext git libncurses5-dev libz-dev patch unzip zlib1g-dev lib32gcc1 libc6-dev-i386 subversion flex uglifyjs git-core gcc-multilib p7zip p7zip-full msmtp libssl-dev texinfo libglib2.0-dev xmlto qemu-utils upx libelf-dev autoconf automake libtool autopoint device-tree-compiler