[Compass app] Unnecessary notifyListeners() in _deleteBooking() callback

[orkan]

Since _deleteBooking() is an action callback called from Command._execute method, which in turn has it's own try...finally block with notifyListeners(), theres no need to duplicate this code in action, right?

https://github.com/flutter/samples/blob/460d6f9b08628c798ed9e9dded01f065b5d5534c/compass_app/app/lib/ui/home/view_models/home_viewmodel.dart#L67-L94

https://github.com/flutter/samples/blob/460d6f9b08628c798ed9e9dded01f065b5d5534c/compass_app/app/lib/utils/command.dart#L53-L70

[jerrys-arch]

Hi, can I work on this issue?