Also remove the unused StoreFixedDoubleArrayHoleSmi

Bug: v8:9708, v8:6949
Change-Id: I07b6e83520a6ac667a4bd08d90510931141719a5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2349303Reviewed-by: Dan Elphick <delphick@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69350}