Remove the handler specified by @handler_id from the list of functions to be executed when this object receives focus events (in or out).
the handler id of the focus handler to be removed from @component
Deprecated: This method is deprecated since ATK version 2.9.4. If you need to track when an object gains or lose the focus, use state-changed:focused notification instead.
See Implementation
Remove the handler specified by @handler_id from the list of functions to be executed when this object receives focus events (in or out).