Fix plan rewrite function's comment.

Author: cristianberneanu

pg_diffix/query/anonymization.h

@@ -25,7 +25,6 @@ extern void rewrite_plan_list(List *plans, AnonQueryLinks *links);
 
 /*
  * Wraps anonymizing Agg nodes with BucketScan nodes. Does nothing if links is NULL.
- * Frees memory associated with links after rewriting.
  */
 extern Plan *rewrite_plan(Plan *plan, AnonQueryLinks *links);