staging: rtl8192e: Remove variable host_decrypt as it is constant

ieee->host_decrypt also named priv->rtllib->host_decrypt is initialized
to 1 and then unchanged. All evaluations will result accordingly. Remove
resulting dead code.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/637350e9bc3edded665009a30d12350157e8a9a9.1687583718.git.philipp.g.hortmann@gmail.com


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