The `main.py` script will build the ISAs required to run tests. Our compiler tests (see "tests/compiler-tests.sh") are run nightly and already test to ensure these ISAs are compiled correctly. Compiling these ISAs as part of this script is therefore redundant. This patch removes this step to save testing time. Change-Id: I58636acfd5512886ac11ca84ee96cbdc9e344c68 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/65175 Maintainer: Bobby Bruce <bbruce@ucdavis.edu> Reviewed-by: Jason Lowe-Power <power.jg@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com>