staging: r8188eu: remove unused field from struct hal_data_8188e

Field BluetoothCoexist of struct hal_data_8188e is unused, remove it.

Acked-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210915090156.4169-5-straube.linux@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>