RFR: Revert unnecessary changes to unified logging

[Y. Srinivas Ramakrishna]

On Fri, 27 Jan 2023 23:06:26 GMT, William Kemper <wkemper at openjdk.org> wrote:

> These are vestigial changes from the initial approach to support logging for the region sampling. This initial approach was abandoned and these changes should have been reverted at that time.

Marked as reviewed by ysr (Author).

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PR: https://git.openjdk.org/shenandoah/pull/207