hg: jdk/hs: 8194085: Obsolete the deprecated SafepointSynchronize flags and remove related code

[harold.seigel at oracle.com]

Changeset: af8578e25d17
Author:    hseigel
Date:      2018-02-26 11:28 -0500
URL:       http://hg.openjdk.java.net/jdk/hs/rev/af8578e25d17

8194085: Obsolete the deprecated SafepointSynchronize flags and remove related code
Summary: Obsolete SafepointSpinBeforeYield, DeferThrSuspendLoopCount, and DeferPollingPageLoopCount and remove associated code.
Reviewed-by: dcubed, coleenp, dholmes

! src/hotspot/share/runtime/arguments.cpp
! src/hotspot/share/runtime/globals.hpp
! src/hotspot/share/runtime/safepoint.cpp
! src/hotspot/share/runtime/safepoint.hpp