Removed unnecessary assignment (#1185)

Original work was done by Panagiotis Foliadis in PR #1035.

Co-authored-by: Panagiotis Foliadis <pfoliadis@hotmail.com>

Author: rafsun42

src/backend/parser/cypher_clause.c

@@ -4389,10 +4389,6 @@ static Node *make_qual(cypher_parsestate *cpstate,
         char *entity_name;
         ColumnRef *cr = makeNode(ColumnRef);
 
-        // cast graphid to agtype
-        qualified_name = list_make2(makeString("ag_catalog"),
-                                    makeString("graphid_to_agtype"));
-
         if (entity->type == ENT_EDGE)
         {
             entity_name = entity->entity.node->name;