fix an exception message

Signed-off-by: Gavin King <gavin@hibernate.org>

hibernate-core/src/main/java/org/hibernate/engine/internal/Collections.java

@@ -94,7 +94,7 @@ public final class Collections {
 			//only collections belonging to deleted entities are allowed to be dereferenced in the case of orphan delete
 			if ( e != null && !e.getStatus().isDeletedOrGone() ) {
 				throw new HibernateException(
-						"A collection with cascade=\"all-delete-orphan\" was no longer referenced by the owning entity instance: " +
+						"A collection with orphan deletion was no longer referenced by the owning entity instance: " +
 						loadedPersister.getRole()
 				);
 			}