remove pg_execute() E_WARNING error when query plan is not defined

Author: Yasuo Ohgaki

ext/pgsql/pgsql.c

@@ -1520,7 +1520,6 @@ PHP_FUNCTION(pg_execute)
 		case PGRES_BAD_RESPONSE:
 		case PGRES_NONFATAL_ERROR:
 		case PGRES_FATAL_ERROR:
-			PHP_PQ_ERROR("Query failed: %s", pgsql);
 			PQclear(pgsql_result);
 			RETURN_FALSE;
 			break;