RFR: 8291952: riscv: Remove PRAGMA_NONNULL_IGNORED

[Aleksey Shipilev]

On Fri, 5 Aug 2022 06:42:34 GMT, Fei Yang <fyang at openjdk.org> wrote:

> This is similar to: https://bugs.openjdk.org/browse/JDK-8291895
> Because the bug that was warned about has now been fixed, the warnings are now superfluous.
> Build with GCC 11.2.0.

Looks fine. Can you link the issue that fixes the underlying issue to this bug?

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

Marked as reviewed by shade (Reviewer).

PR: https://git.openjdk.org/jdk/pull/9766