staging: rtl8192e: Remove variable card_type

Remove variable card_type as it is initialized but never unused.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/f0f40f574ac4837bd2be3b6384ae42d9aabf1832.1687583718.git.philipp.g.hortmann@gmail.com


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