staging: rtl8192e: Remove variable bdisable_nic

Remove variable bdisable_nic as always set to false. Remove dead code.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/6b083ce8c4aaf42f366c365cbc47178afa2636d4.1687583718.git.philipp.g.hortmann@gmail.com


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