Port 5b2ab2f6

Original Commit Message:

    Now that all uses of LoadStackPointer have been removed, this CL cleans
    up related code:

    - Removed LoadStackPointer.
    - Removed ArchStackPointer.
    - Removed IA32StackCheck.
    - Removed X64StackCheck.
    - Removed StackCheckMatcher.

    All stack checks now follow a simple path without matchers or special
    register constraints: they load the limit and pass it to
    StackPointerGreaterThan, which is finally handled by code generation.

R=jgruber@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Change-Id: I68a66054dc1422e7fc0598ef4d112a031ba94cc1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1750223Reviewed-by: Milad Farazmand <miladfar@ca.ibm.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#63184}