Revert "DEV: Queue jobs in tests by default."

Too risky for now

This reverts commit be28154d3b9289a249d413d462705cd075375888.

spec/requests/groups_controller_spec.rb

@@ -496,6 +496,7 @@ describe GroupsController do
       before do
         user.update_attributes!(admin: true)
         sign_in(user)
+        SiteSetting.queue_jobs = true
       end
 
       it 'should be able to update the group' do