staging: rtl8723bs: core: remove condition never execute

Remove condition which never get execute.
as pattrib->mdata is always zero before if condition check.

Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Saurav Girepunje <saurav.girepunje@gmail.com>
Link: https://lore.kernel.org/r/YVnTJCoz2qsXDXGc@user


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