RFR: 8344105: Remove SecurityManager and related calls from jdk.attach and jdk.hotspot.agent

[Kevin Walls]

On Wed, 13 Nov 2024 11:53:26 GMT, Kevin Walls <kevinw at openjdk.org> wrote:

> Remove redundant SecurityManager, AccessController references
> (following on from JDK-8338411: Implement JEP 486: Permanently Disable the Security Manager).

Thanks for the reviews.  Tier1 - 3 completed, and local jtreg testing of tests that mention "attach".

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PR Comment: https://git.openjdk.org/jdk/pull/22067#issuecomment-2475658268