kS390_Push will also reserve the needed space on the stack
so there is no need for StackClaim anymore.

Change-Id: I0f7f410d7dbd8ec880335fcbdf29f492d3dd3858
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2627867Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#72080}