refactoring tile delete method

src/main/java/de/srsoftware/web4rail/tiles/CrossPlus.java

@@ -4,7 +4,6 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
-import de.srsoftware.web4rail.BaseClass;
 import de.srsoftware.web4rail.Connector;
 import de.srsoftware.web4rail.Plan.Direction;
 import de.srsoftware.web4rail.tiles.Turnout.State;
@@ -32,9 +31,4 @@ public class CrossPlus extends Tile{
 	public List<Direction> possibleDirections() {
 		return List.of(Direction.EAST,Direction.WEST,Direction.NORTH,Direction.SOUTH);
 	}	
-	
-	@Override
-	protected void removeChild(BaseClass child) {
-		// this class has no child elements		
-	}
 }