ROX-30765: disable SLES

[ovalenti]

Description

Remove commented-out sles and gardenlinux VMs in integration-tests.
We want to keep those files in sync with master to simplify backporting.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 28.79%. Comparing base (bdb0dc0) to head (0ad50b1).
⚠️ Report is 1 commits behind head on release-3.23.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@              Coverage Diff              @@
##           release-3.23    #2613   +/-   ##
=============================================
  Coverage         28.79%   28.79%           
=============================================
  Files                95       95           
  Lines              5796     5796           
  Branches           2551     2551           
=============================================
  Hits               1669     1669           
  Misses             3409     3409           
  Partials            718      718           

Flag	Coverage Δ
collector-unit-tests	28.79% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.