host now responsible for cleanup, fixes onWrench MultiPart deletion.

fmp/CableBusPart.java

@@ -496,4 +496,9 @@ public class CableBusPart extends JCuboidPart implements JNormalOcclusion, IReds
 		return cb.isEmpty();
 	}
 
+	@Override
+	public void cleanup() {
+		tile().remPart( this );
+	}
+
 }

parts/CableBusContainer.java

@@ -968,4 +968,9 @@ public class CableBusContainer implements AEMultiTile, ICableBusContainer
 		return myLayerFlags;
 	}
 
+	@Override
+	public void cleanup() {
+		tcb.cleanup();
+	}
+
 }

parts/PartPlacement.java

@@ -104,7 +104,7 @@ public class PartPlacement
 						}
 
 						if ( host.isEmpty() )
-							world.setBlock( x, y, z, Platform.air );
+							host.cleanup();
 
 						if ( is != null && !is.isEmpty() )
 						{

tile/networking/TileCableBus.java

@@ -320,6 +320,11 @@ public class TileCableBus extends AEBaseTile implements AEMultiTile, ICustomColl
 		return cb.getLayerFlags();
 	}
 	
+	@Override
+	public void cleanup() {
+		getWorldObj().setBlock( xCoord, yCoord, zCoord, Platform.air );
+	}
+
 	/**
 	 * Immibis MB Support
 	 */