Remove the execution tier check for simd tests. On archs without
Liftoff, those tests that are configured to run on Liftoff will fail
with this check, since they bail out to TF.

We remove this check for now, but will think of a way to enforce this in
a more platform specific way.

Bug: v8:9909
Change-Id: Id56f841fe6e342434af3dbcdaef0a8a284614994
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2019924Reviewed-by: Milad Farazmand <miladfar@ca.ibm.com>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65983}