hg: jdk/sandbox: 8214821: Remove ConcurrentHashTable::get_copy

[chris.hegarty at oracle.com]

Changeset: 606b80182f64
Author:    gziemski
Date:      2019-01-29 11:44 -0600
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/606b80182f64

8214821: Remove ConcurrentHashTable::get_copy
Summary: Remobed get_copy API, replaced gtest usage with get API
Reviewed-by: coleenp, rehn, kbarrett

! src/hotspot/share/utilities/concurrentHashTable.hpp
! src/hotspot/share/utilities/concurrentHashTable.inline.hpp
! test/hotspot/gtest/utilities/test_concurrentHashtable.cpp