[OpenMP] Fix tool tests 9475ed84909463ad594602dd76583f4ff12efcd0

These were still passing because I did not clear all the test artifacts
in between so the old ones were still present after updating the test. I
forgot to update a lit substitution which failed on clean builds.

GitOrigin-RevId: 5b60087eede95a5d4c14d9eaaf0b90faadb24c50
1 file changed