RFR: 8283198: Remove src/jdk.hotspot.agent/test

[Alex Menkov]

On Thu, 25 Sep 2025 17:25:08 GMT, Francesco Andreuzzi <fandreuzzi at openjdk.org> wrote:

> According to the README, this is a manual test of `libproc.so`. The test has a non-standard structure, does not compile using the provided `Makefile`, and hasn't run possibly in a long time. Thus, I propose to remove it.

looks like it hasn't been used for ages.
And I suppose test platform was solaris

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Marked as reviewed by amenkov (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/27496#pullrequestreview-3269843503