zephyr: Remove skips from ec_app test
zephyr: Remove skips from ec_app test

With the ztest new api, there is no reason for all these skips.

BRANCH=None
BUG=None
TEST=./twister --clobber -v -i -T zephyr/test/ec_app

Signed-off-by: Jeremy Bettis <4df7b5147fee087dca33c181f288ee7dbf56e022@google.com>
Change-Id: Id98c69002bafb7e0b6d5e1a544cc3d2e1fea6997
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3855161
Commit-Queue: Jeremy Bettis <4df7b5147fee087dca33c181f288ee7dbf56e022@chromium.org>
Reviewed-by: Tristan Honscheid <1e17951ff5ffc8afe254954c03de64afef62fe52@google.com>
Code-Coverage: Zoss <345cf107e82c70959d46f59d98bddc98ce458aff@prod.google.com>
Tested-by: Jeremy Bettis <4df7b5147fee087dca33c181f288ee7dbf56e022@chromium.org>
Reviewed-by: Simon Glass <c00b0378376498bd9cd974c388df8854c0131d27@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec