test/*: remove -t from criu restore

Since commit 43ce038e -t is not required for restore,
plus a warning is printed if it is used. Let's remove
-t from criu restore in all test cases.

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>