Drop Ubuntu 22.04 from laptop setup build

Devs should all be migrated to 24.04 by now; keeping 22.04 doubled build
time and was contributing to timeouts.

CMK-33697

Change-Id: I52771823c6acfc9dacae9a71a1116b2556f71391
(cherry picked from commit e7cda0d)

Author: nigelgbanks

buildscripts/scripts/test-laptop-setup.groovy

@@ -41,9 +41,7 @@ void main() {
             " --build-arg NEXUS_PASSWORD='$PASSWORD'" +
             " --build-arg CI=1"
         );
-        // no support for 20.04, sorry
-        // python2 would be required, and the system Python does not support typing in "strip_binaries"
-        def ubuntu_versions = ["22.04", "24.04"];
+        def ubuntu_versions = ["24.04"];
 
         dir("${checkout_dir}") {
             sh("""