EFI_UNREGISTER_KEYSTROKE_NOTIFY

The UnregisterKeystrokeNotify() function removes the notification which was previously registered.

@param This A pointer to the EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL instance.

@param NotificationHandle The handle of the notification function being unregistered.

@retval EFI_SUCCESS The device state was set appropriately.

@retval EFI_INVALID_PARAMETER The NotificationHandle is invalid.