Can't drop test_04_remote_bestman2_server_dep_libs until we drop 3.3->3.4 tests so add a comment

Author: matyasselmeci

osgtest/tests/special_install.py

@@ -88,6 +88,7 @@ def test_03_update_osg_release(self):
         core.state['install.release-updated'] = True
         core.osg_release(update_state=True)
 
+    # TODO: Drop this once we stop doing 3.3->3.4 upgrade tests
     def test_04_remove_bestman2_server_dep_libs(self):
         if core.options.updaterelease != "3.4":
             return