RFR: 8254777: Remove unimplemented Management::get_loaded_classes

[Serguei Spitsyn]

On Wed, 14 Oct 2020 15:04:32 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> There seems to be no definition of `Management::get_loaded_classes` anywhere in current tip or history prior the
> initial load. Can be removed.
> Testing:
>  - [x] Linux x86_64 build
>  - [x] Text search for `get_loaded_classes` in `src/hotspot`

Hi Aleksey,
This is good.
Thanks,
Serguei

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Marked as reviewed by sspitsyn (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/660