staging: rtl8712: Remove variable 'raw' from rtl871x_open_fw()

Remove useless variable 'raw' from function rtl871x_open_fw()
making the code a bit easier to understand.

Signed-off-by: Mauro Dreissig <mukadr@gmail.com>
Link: https://lore.kernel.org/r/20200705143552.9368-5-mukadr@gmail.com


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