Remove stray blank line among gram.y keywords

introduced by de36004

Author: petere

src/backend/parser/gram.y

@@ -766,7 +766,6 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
 
 	PARALLEL PARAMETER PARSER PARTIAL PARTITION PARTITIONS PASSING PASSWORD PATH
 	PERIOD PLACING PLAN PLANS POLICY
-
 	POSITION PRECEDING PRECISION PRESERVE PREPARE PREPARED PRIMARY
 	PRIOR PRIVILEGES PROCEDURAL PROCEDURE PROCEDURES PROGRAM PUBLICATION