RFR: 8256719: C1 flags that should have expired are still present

Fri Nov 20 08:35:05 UTC 2020

On Fri, 20 Nov 2020 08:18:38 GMT, Tobias Hartmann <thartmann at openjdk.org> wrote:

> [JDK-8235673](https://bugs.openjdk.java.net/browse/JDK-8235673) removed some flags from C1 and made them C2 only. They expired in JDK 16 and should simply be removed.
> 
> Thanks,
> Tobias

Looks good.

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Marked as reviewed by neliasso (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/1338