RFR: 8315413: Remove special filtering of Continuation.yield0 in StackWalker

[Alan Bateman]

On Wed, 30 Aug 2023 20:57:43 GMT, Mandy Chung <mchung at openjdk.org> wrote:

> Loom added a special filtering of Continuation.yield0 in stack walker.  After the initial implementation, JDK-8304919 marks the yielding and entering methods with `@Hidden` and hidden frames are filtered by stack walker by default.   With `@Hidden` the special filtering should not be needed.

If tests are passing then this should be okay.

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Marked as reviewed by alanb (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/15498#pullrequestreview-1604036758