To delete an object, go to Qalcwise designer and click delete button from the menu of the object
and confirm your decision in the window protecting against accidental object deletion:
Objects that are used by other objects cannot be deleted because it could lead to their malfunction. If you want to remove such an object, first modify or remove the objects dependent on it.
Remember, deleting objects is an irreversible process. Before you make a decision to remove the object, make sure that you do not need it any more.