RFR: 8353593: MethodData "mileage_*" methods and fields aren't used and can be removed

[Tobias Hartmann]

On Thu, 3 Apr 2025 00:52:30 GMT, Cesar Soares Lucas <cslucas at openjdk.org> wrote:

> Please review this trivial patch to remove dead code from MethodData class.
> Tested on Linux x86_64 with JTREG_TIER1.

Looks good.

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Marked as reviewed by thartmann (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/24399#pullrequestreview-2752057606