Lexer and parser don't need to be changed as there is nakedIdentifier that matches custom function names

Author: lucamolteni

hibernate-core/src/main/antlr/org/hibernate/grammars/hql/HqlLexer.g4

@@ -273,7 +273,6 @@ ON					: [oO] [nN];
 ONLY				: [oO] [nN] [lL] [yY];
 OR					: [oO] [rR];
 ORDER				: [oO] [rR] [dD] [eE] [rR];
-ORDINAL				: [oO] [rR] [dD] [iI] [nN] [aA] [lL];
 OTHERS				: [oO] [tT] [hH] [eE] [rR] [sS];
 OUTER				: [oO] [uU] [tT] [eE] [rR];
 OVER				: [oO] [vV] [eE] [rR];

hibernate-core/src/main/antlr/org/hibernate/grammars/hql/HqlParser.g4

@@ -1863,7 +1863,6 @@ jsonUniqueKeysClause
 	| ONLY
 	| OR
 	| ORDER
-	| ORDINAL
 	| OTHERS
 //	| OUTER
 	| OVER