RFR 8235766: SafepointSynchronize::_end_of_last_safepoint is unused

[Lois Foltan]

Looks good  & trivial.
Lois

On 1/9/2020 12:11 PM, Harold Seigel wrote:
> Hi,
>
> Please review this trivial JDK-15 fix to remove 
> SafepointSynchronize::_end_of_last_safepoint.
>
> Open Webrev: http://cr.openjdk.java.net/~hseigel/bug_8235766/webrev/
>
> JBS Bug: https://bugs.openjdk.java.net/browse/JDK-8235766
>
> The fix was regression tested by running Mach5 tiers 1 and 2 tests and 
> builds on Linux-x64, Solaris, Windows, and Mac OS X.
>
> Thanks, Harold
>