Do not set from.inh to false in copy

Author: baobao0206

src/backend/commands/copy.c

@@ -342,7 +342,6 @@ DoCopy(ParseState *pstate, const CopyStmt *stmt,
 			from = makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
 								pstrdup(RelationGetRelationName(rel)),
 								-1);
-			from->inh = false;	/* apply ONLY */
 
 			/* Build query */
 			select = makeNode(SelectStmt);