Integrated: 8364141: Remove LockingMode related code from x86

[Fredrik Bredberg]

On Wed, 30 Jul 2025 13:17:37 GMT, Fredrik Bredberg <fbredberg at openjdk.org> wrote:

> Since the integration of [JDK-8359437](https://bugs.openjdk.org/browse/JDK-8359437) the `LockingMode` flag can no longer be set by the user, instead it's declared as `const int LockingMode = LM_LIGHTWEIGHT;`. This means that we can now safely remove all `LockingMode` related code from all platforms.
> 
> This PR removes `LockingMode` related code from the **x86** platform.
> 
> When all the `LockingMode` code has been removed from all platforms, we can go on and remove it from shared (non-platform specific) files as well. And finally remove the `LockingMode` variable itself.
> 
> Passes tier1-tier5 with no added problems.

This pull request has now been integrated.

Changeset: f155f7d6
Author:    Fredrik Bredberg <fbredberg at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/f155f7d6e50c702f65858774cfd02ef60aa9cad5
Stats:     639 lines in 10 files changed: 37 ins; 546 del; 56 mod

8364141: Remove LockingMode related code from x86

Reviewed-by: aboldtch, dholmes, coleenp

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PR: https://git.openjdk.org/jdk/pull/26552