RFR: Remove Leyden experimental workflow

Fri Jun 27 19:50:03 UTC 2025

On Fri, 27 Jun 2025 19:32:45 GMT, Ashutosh Mehra <asmehra at openjdk.org> wrote:

> Looks good. @iklam I wonder if should move LeydenGCFlags to mainstream. It is not testing anything specific to leyden repo.

If we decide to move we should rename it to use `AOT` instead of `Leyden` to avoid confusion.
I think we should replace all instances of `leyden` with `AOT`.

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PR Comment: https://git.openjdk.org/leyden/pull/83#issuecomment-3014201786