HHH-12445 Remove unused constants related to "null"/"not-null" discriminator values

Author: yrodiere

hibernate-core/src/main/java/org/hibernate/persister/entity/JoinedSubclassEntityPersister.java

@@ -62,8 +62,6 @@ public class JoinedSubclassEntityPersister extends AbstractEntityPersister {
 	private static final String IMPLICIT_DISCRIMINATOR_ALIAS = "clazz_";
 	private static final Object NULL_DISCRIMINATOR = new MarkerObject("<null discriminator>");
 	private static final Object NOT_NULL_DISCRIMINATOR = new MarkerObject("<not null discriminator>");
-	private static final String NULL_STRING = "null";
-	private static final String NOT_NULL_STRING = "not null";
 
 	// the class hierarchy structure
 	private final int tableSpan;

hibernate-core/src/main/java/org/hibernate/persister/entity/SingleTableEntityPersister.java

@@ -114,8 +114,6 @@ public class SingleTableEntityPersister extends AbstractEntityPersister {
 
 	private static final Object NULL_DISCRIMINATOR = new MarkerObject( "<null discriminator>" );
 	private static final Object NOT_NULL_DISCRIMINATOR = new MarkerObject( "<not null discriminator>" );
-	private static final String NULL_STRING = "null";
-	private static final String NOT_NULL_STRING = "not null";
 
 	//INITIALIZATION: