fix(image_item): do not disconnect the monitor from within the image item

bec_widgets/widgets/plots/image/image_item.py

@@ -275,6 +275,5 @@ class ImageItem(BECConnector, pg.ImageItem):
         self.max_len = 0
 
     def remove(self):
-        self.parent().disconnect_monitor(self.config.monitor)
         self.clear()
         super().remove()