CHROMIUM: virtwl: remove unneeded access_checks in ioctls

TEST=virtio_wl.c compiles
BUG=None

Change-Id: Ib4bde541f02e4291dad1570ccd4109e182fc5198
Signed-off-by: Zach Reizner <zachr@google.com>
Reviewed-on: https://chromium-review.googlesource.com/865495
Commit-Ready: Zach Reizner <zachr@chromium.org>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Dmitry Torokhov <dtor@chromium.org>
(cherry-picked from commit 54fdd0889fb51e612b871d4dc6d87a7b4f7b2a4b)
Reviewed-on: https://chromium-review.googlesource.com/957810