Change the build test suites script to be noop

In preparation of switching over the git_main test suites target to
using this script change it to a no-op first to insure there's no
initial impact.

Test: ./build/make/ci/build_test_suites-trunk_staging --target_product aosp_x86_64 --target_release trunk_staging --with_dexpreopt_boot_img_and_system_server_only
Bug: 314171817
Change-Id: I7afab933143e4b617866b1975b1cbc71107f5b2f