Integrated: 8351149: Remove dead IA32/X32/!AMD64 code blocks after 32-bit x86 removal

[Anton Seoane Ampudia]

On Sun, 26 Oct 2025 09:18:40 GMT, Anton Seoane Ampudia <aseoane at openjdk.org> wrote:

> This PR carries out cleanup of `IA32`-, `X32`- and `!AMD64`-guarded code blocks after the removal of the 32-bit x86 architecture from HotSpot.
> 
> These code blocks are either not needed anymore or the guards redundant.
> 
> Please note that this changeset addresses the "complement" of [JDK-8351159](https://github.com/openjdk/jdk/pull/27987). This is to say, this PR targets all directories that are *not* `cpu/x86` and `os_cpu/x86`.
> 
> **Testing:** passes tiers 1-3

This pull request has now been integrated.

Changeset: 86f60f60
Author:    Anton Seoane Ampudia <aseoane at openjdk.org>
Committer: Vladimir Kozlov <kvn at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/86f60f608198c2fa5cbbe945d9396326b6944401
Stats:     201 lines in 22 files changed: 0 ins; 173 del; 28 mod

8351149: Remove dead IA32/X32/!AMD64 code blocks after 32-bit x86 removal

Reviewed-by: stefank, ayang, kvn

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PR: https://git.openjdk.org/jdk/pull/27990