staging: r8188eu: core: remove unused variable padapter

Remove unused variable padapter from mp_init_xmit_attrib().

Reviewed-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: Saurav Girepunje <saurav.girepunje@gmail.com>
Link: https://lore.kernel.org/r/YTukfSY0CxowGXlQ@user


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