Merge branch 'qa-ml-skip-after-hook-if-group-is-nil' into 'master'

Don't try to delete nonexistent group

See merge request gitlab-org/gitlab-ee!14482

qa/qa/specs/features/browser_ui/1_manage/ee_group/group_saml_sso_spec.rb

@@ -106,8 +106,9 @@ module QA
           end
         end
       end
+
       after(:all) do
-        remove_group(@group)
+        remove_group(@group) unless @group.nil?
       end
     end