staging: r8188eu: remove rtw_list_delete wrapper

Remove the rtw_list_delete wrapper function. Call list_del_init directly.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220115165536.231210-6-martin@kaiser.cx


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