usb: device: Revert "fix possible deadlock in usb_transfer_sync()"

This reverts commit cd7461495f1aeb4561d6a7e96c9f37b029805694,
introduced to fix possible deadlock as result of changes in
commit f206170c655c
("usb: device: Do not call callback when transfer is cancelled")
which is now reverted.

Signed-off-by: Johann Fischer <johann.fischer@nordicsemi.no>
1 file changed