Don't override is_min in the UseFullTripCount case

That information is propagated and used in other functions, so we
have to keep the current value.

Bug: 350830493
Fixes: 350830493
Test: art/test/testrunner/testrunner.py --host --64 --optimizing -b
Change-Id: I25919aa3a1fedeca38e7633a87d60d44d7719724