[lworld] RFR: 8373347: [lworld] Minor cleanups in the memory directory

[Paul Hübner]

On Tue, 9 Dec 2025 12:29:28 GMT, Stefan Karlsson <stefank at openjdk.org> wrote:

> There are a few left-over blank line changes, redundant includes, and unused code in the memory/ directory. I suggest that we clean those out to make it nicer to review the patch.

LGTM, although maybe someone knows the historic reason of why we had `do_oop_no_buffering` to begin with.

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Marked as reviewed by phubner (Author).

PR Review: https://git.openjdk.org/valhalla/pull/1781#pullrequestreview-3557201046