lower the log level for loading moh to debug

res/res_musiconhold.c

@@ -2234,7 +2234,7 @@ static int load_module(void)
 	}
 
 	if (!load_moh_classes(0) && ast_check_realtime("musiconhold") == 0) { 	/* No music classes configured, so skip it */
-		ast_log(LOG_WARNING, "No music on hold classes configured, "
+		ast_log(LOG_DEBUG, "No music on hold classes configured, "
 				"disabling music on hold.\n");
 	} else {
 		ast_install_music_functions(local_ast_moh_start, local_ast_moh_stop,