Azure: Do not run "udelay" test on sandbox

With the changes in commit 88db4fc5fec2 ("test: Update time tests to use
unit-test asserts") we now frequently exceed the limit on the udelay
test, leading to false failures in CI. Skip this test.

Signed-off-by: Tom Rini <trini@konsulko.com>
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Cc: Simon Glass <sjg@chromium.org>
1 file changed