Make 674-hiddenapi more deterministic

This does not seem to make the order of output line completely
deterministic, but with the new patch the test should simply
print nothing.

Bug: 64382372
Test: art/test.py --host -b -r -t 674-hiddenapi
Change-Id: I18bb76a0247b5b274e783d293aeb01e3b665a78d