<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def remove(self):
 """ Remove a cursor. Remove all `Selection`\\s, disconnect all callbacks, and allow the cursor to be garbage collected. """

        for disconnectors in self._disconnectors:
            disconnectors()
        for sel in self.selections:
            self.remove_selection(sel)
        for s in type(self)._keep_alive.values():
            with suppress(KeyError):
                s.remove(self)