Given that benchRun()'s main purpose is for performance testing and on top of that, we do not recommend using benchRun() for performance testing anymore and benchRun() implementation itself launches multiple threads internally, there's not much point in keeping bench_test*.js within parallel test job.

Let's move bench_test*.js out of the parallel test job or include them into parallel tester skipTests to avoid seeing parallel job failures like similar to BF-21921.