Marco Trevisan authored Jan 16, 2020 and Marco Trevisan committed Jan 20, 2020

Remove the never-used cmd_complete_data value and the repetition of
cmd_complete_error.

In fact now as per the fpi_device_verify_report() usage, we already pass
the match information to the device, such as the error and it will be
they will be used on completion if needed.

This allows to simplify cmd_ssm_done() as well.