Stop running deprecated simulation_test

See https://codereview.chromium.org/2808833003/
for context.

Bug: 699120, 693058
Change-Id: I1420c347d4ae2bac8bea54bc1b921fe6b65e6161
Reviewed-on: https://chromium-review.googlesource.com/474027Reviewed-by: Robbie Iannucci <iannucci@chromium.org>
Commit-Queue: Paweł Hajdan Jr. <phajdan.jr@chromium.org>

tests/recipes_test.py

@@ -16,9 +16,6 @@ def recipes_py(*args):
       os.path.join(ROOT_DIR, 'recipes', 'recipes.py'),
       '--use-bootstrap'] + list(args))
 
-# Run both current simulation test logic (simulation_test), and experimental
-# (test). Eventually the former will be removed.
-recipes_py('simulation_test')
 recipes_py('test', 'run')
 
 recipes_py('lint')