RFR: 8315488: Remove outdated and unused ciReplay support from SA [v7]

[Yudi Zheng]

On Fri, 28 Feb 2025 18:10:26 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> This change removes the ci, c1 and c2 compiler code from the serviceability agent.  The ciReplay functionality is supported inside the jvm and this duplicated functionality in SA had bit rotted so is removed.
>> Tested with tier1-4.
>
> Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix COMPILER2 preprocessor constant for SA.

JVMCI changes LGTM

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

Marked as reviewed by yzheng (Committer).

PR Review: https://git.openjdk.org/jdk/pull/23782#pullrequestreview-2653911941