Remove obsolete comment atop ri_PlanCheck.
Commit removed the unused parameter but forgot to update the
nearby comments.
Author: Li Japin
Backpatch-through: 13, where it was introduced
Discussion:
@@ -2130,9 +2130,6 @@ InvalidateConstraintCacheCallBack(Datum arg, int cacheid, uint32 hashvalue)
/*
* Prepare execution plan for a query to enforce an RI restriction
- *
- * If cache_plan is true, the plan is saved into our plan hashtable
- * so that we don't need to plan it again.
*/
static SPIPlanPtr
ri_PlanCheck(const char *querystr, int nargs, Oid *argtypes,
