RFR: 8316967: Remove unnecessary vmtimer from UnregisteredClasses::load_class

[David Holmes]

On Wed, 4 Oct 2023 23:30:58 GMT, Calvin Cheung <ccheung at openjdk.org> wrote:

> Simple fix for removing the vmtimer from `UnregisteredClasses::load_class` and the corresponding `PerfClassTraceTime` constructor.
> 
> Passed tier1 testing.

As it stands this timer doesn't measure anything, but presumably the intent was to measure the execution time of this method? So why not just fix the scope of the timer rather than removing it?

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PR Comment: https://git.openjdk.org/jdk/pull/16046#issuecomment-1747968934