inventory ui transition wip

src/net/torvald/terrarum/ui/UIItemImageButton.kt

@@ -41,10 +41,6 @@ open class UIItemImageButton(
         var highlightable: Boolean
 ) : UIItem(parent, initialX, initialY) {
 
-    // deal with the moving position
-    override var oldPosX = posX
-    override var oldPosY = posY
-
     var highlighted = false
 
     override fun render(batch: SpriteBatch, camera: Camera) {