Our testing show that AOT jtreg tests consume a lot of time when running with -Xcomp.
JDK-8195729 fix changed way how forked jaotc tool is run. It does not use external flags anymore (based on review comments).
It is only JTREG wrapper and class c.a.AotCompiler (which launches jaotc) run with -Xcomp. Nothing important is tested with it.
We should not run these tests with -Xcomp.