BETA: Adding remove method to `AbstractVariables`.

	* Suggested by: nBd

L2J_Server_BETA/java/com/l2jserver/gameserver/model/variables/AbstractVariables.java

@@ -105,4 +105,14 @@ public abstract class AbstractVariables extends StatsSet implements IRestorable,
 	{
 		return _hasChanges.compareAndSet(expect, update);
 	}
+	
+	/**
+	 * Removes variable
+	 * @param name
+	 */
+	public final void remove(String name)
+	{
+		_hasChanges.compareAndSet(false, true);
+		getSet().remove(name);
+	}
 }