[jdk21u] RFR: 8311249: Remove unused MemAllocator::obj_memory_range

[Aleksey Shipilev]

On Mon, 10 Jul 2023 10:07:22 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Clean backport to remove dead code, keep the codebases in sync (already backported to 17u), and make life easier for downstreams.
> 
> Additional testing:
>  - [x] Local macos-aarch64-server-fastdebug build
>  - [x] GHA

Testing is clean. Push approval is here.

-------------

PR Comment: https://git.openjdk.org/jdk21u/pull/8#issuecomment-1651554813