Feature description
I'm suggesting to update disposal command so i request to add a argument "hand" if no arguments provided then use the GUI if the argument "hand" is provided then removes the item in your hand and the other items that are the same item from the item in your hand.

How the feature is useful
It can be easy to delete one item from your inventory, for example you have a full inventory of red roses & iron ingot from your ig spawner farm in a server, you can take the red rose in your hand and use /disposal hand if only the red roses needs to be removed from your inventory but not the iron ingot in your inventory.

This is what /clear will do once we've finished restoring its original functionality. We're not going to add this to /disposal because that doesn't make sense - it's a carbon copy of the [disposal] sign.

Edit: you can follow #3191 for progress on this.

oof