8333824: Unused ClassValue in VarHandles

Backport-of: 7b43a8c

Author: Satyen Subramaniam

src/java.base/share/classes/java/lang/invoke/VarHandles.java

@@ -25,7 +25,6 @@
 
 package java.lang.invoke;
 
-import jdk.internal.foreign.Utils;
 import sun.invoke.util.Wrapper;
 
 import java.lang.reflect.Constructor;
@@ -36,8 +35,6 @@
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Objects;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.ConcurrentMap;
 import java.util.stream.Stream;
 
 import static java.lang.invoke.MethodHandleStatics.UNSAFE;
@@ -47,13 +44,6 @@
 
 final class VarHandles {
 
-    static ClassValue<ConcurrentMap<Integer, MethodHandle>> ADDRESS_FACTORIES = new ClassValue<>() {
-        @Override
-        protected ConcurrentMap<Integer, MethodHandle> computeValue(Class<?> type) {
-            return new ConcurrentHashMap<>();
-        }
-    };
-
     static VarHandle makeFieldHandle(MemberName f, Class<?> refc, boolean isWriteAllowedOnFinalFields) {
         if (!f.isStatic()) {
             long foffset = MethodHandleNatives.objectFieldOffset(f);