remove unused interface Loggable

hibernate-core/src/main/java/org/hibernate/boot/model/relational/Loggable.java

@@ -1,21 +0,0 @@
-/*
- * Hibernate, Relational Persistence for Idiomatic Java
- *
- * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
- * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
- */
-package org.hibernate.boot.model.relational;
-
-/**
- * Marker for things which can be logged.
- *
- * @author Steve Ebersole
- */
-public interface Loggable {
-	/**
-	 * Obtain the string representation of this value usable in log statements.
-	 *
-	 * @return The loggable representation
-	 */
-	String toLoggableString();
-}