vboot/ui/tests: Remove unnecessary aborting delay check

- Do not check if delay is aborted every time since we already have
an individual test item.
- Do not save the last return value of vb2ex_mtime() to allow us to use
vb2ex_mtime() elsewhere.
- Use fuzzy match for `delay finished` test items.

     make clean && make runtests

Signed-off-by: Hsuan Ting Chen <roccochen@chromium.org>
Change-Id: Ic211955637c67dc35ffd4c12194a8ccb77e1bf9c
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/2508104
Reviewed-by: Joel Kitching <kitching@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@chromium.org>
1 file changed