Save some time and skip installing packages that are already there only in the Basic Checks build (microsoft#153487)

This reverts commit 42584f1.

Author: alexdima

.github/workflows/basic.yml

@@ -22,8 +22,6 @@ jobs:
       # TODO: rename azure-pipelines/linux/xvfb.init to github-actions
       - name: Setup Build Environment
         run: |
-          sudo apt-get update
-          sudo apt-get install -y libxkbfile-dev pkg-config libsecret-1-dev libxss1 dbus xvfb libgtk-3-0 libgbm1
           sudo cp build/azure-pipelines/linux/xvfb.init /etc/init.d/xvfb
           sudo chmod +x /etc/init.d/xvfb
           sudo update-rc.d xvfb defaults

.github/workflows/ci.yml

@@ -106,6 +106,8 @@ jobs:
       # TODO: rename azure-pipelines/linux/xvfb.init to github-actions
       - name: Setup Build Environment
         run: |
+          sudo apt-get update
+          sudo apt-get install -y libxkbfile-dev pkg-config libsecret-1-dev libxss1 dbus xvfb libgtk-3-0 libgbm1
           sudo cp build/azure-pipelines/linux/xvfb.init /etc/init.d/xvfb
           sudo chmod +x /etc/init.d/xvfb
           sudo update-rc.d xvfb defaults