RFR (trivial) 8198635: Remove unused safepoint message functions and ShowSafepointMsgs

[Erik Österlund]

Hi Coleen,

Looks good.

Thanks,
/Erik

On 2018-02-23 18:32, coleen.phillimore at oracle.com wrote:
> See bug for more info.
> Tested with mach5 tier1 and
>
> %java -XX:+ShowSafepointMsg -version
> Java HotSpot(TM) 64-Bit Server VM warning: Ignoring option 
> ShowSafepointMsgs; support was removed in 11.0
>
> open webrev at http://cr.openjdk.java.net/~coleenp/8198635.01/webrev
> bug link https://bugs.openjdk.java.net/browse/JDK-8198635
>
> Thanks,
> Coleen