RFR: 8372755: Remove local suppression of VS C4146 warnings

[Albert Mingkun Yang]

On Sat, 29 Nov 2025 10:20:50 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

> Please review this trivial change to remove unnecessary local Visual Studio
> warning suppressions for C4146 in HotSpot code.  JDK-8254072 intentionally
> globally suppressed that warning when building HotSpot, so local suppression
> is no longer needed.
> 
> Testing: mach5 tier1

Trivial.

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Marked as reviewed by ayang (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/28564#pullrequestreview-3529742316