Revert "Meta: Automatically select best apt mirror"

This reverts commit b0606d90f0.

This seems to prevent libegl-mesa0 from being installed (which for some
reason isn't failing the Azure jobs - the failure seen later is that
ccache is not installed).

Meta/Azure/Setup.yml

@@ -5,12 +5,6 @@ steps:
   - checkout: self
     persistCredentials: true
 
-  - ${{ if in(parameters.os, 'Linux', 'Serenity', 'Android') }}:
-    - script: |
-        sudo gem install apt-spy2
-        sudo apt-spy2 fix --commit --launchpad --country=US
-      displayName: 'Select best APT mirror'
-
   - ${{ if eq(parameters.os, 'Serenity') }}:
     - script: |
         wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -