staging: rtl8192e: Remove unused variable RF_Type

Remove unused variable RF_Type.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/7710a87f627dcfd2d0c34f14f583625ffab10660.1680902603.git.philipp.g.hortmann@gmail.com


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