Remove dead free.

Author: dthain

batch_job/src/vine_factory.c

@@ -563,9 +563,6 @@ static int submit_worker( struct batch_queue *queue )
 	char *features_string = make_features_string(features_table);
 	ADD_ARG2(cmd," %s",features_string);
 	free(features_string);
-	if(transfer_port_range) {
-		free(transfer_port_arg);
-	}
 
 	if(wrapper_command) {
 		// Note that we don't use string_wrap_command here,