[lworld] RFR: 8373608: [lworld] Remove ObjBufferAllocator

[Stefan Karlsson]

On Fri, 12 Dec 2025 16:23:18 GMT, Paul Hübner <phubner at openjdk.org> wrote:

>> Unsafe_MakePrivateBuffer is used by the VectorAPI, which is a branch that depends on the `lworld` branch.
>> More details here: https://github.com/openjdk/valhalla/pull/1593
>
> In addition to what Fred said, we have `runtime/valhalla/inlinetypes/LarvalMarkWordTest.java` (and possibly others) which makes use of it.

OK. Let's take the larval-bit discussion seperately.

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PR Review Comment: https://git.openjdk.org/valhalla/pull/1794#discussion_r2618476429