JDK-8056152 added a new constructor to java.lang.Thread to constructing Threads that do not
inherit inheritable thread-local initial values. All usages of sun.misc.ManagedLocalsThread in
the base module were also replaced with this new constructor. Given there is now a supported API
for creating such threads, other areas of the JDK should be updated to use it, where applicable. If all
usages are replaced, then sun.misc.ManagedLocalsThread can be removed.

/jdk/src/jdk.httpserver11$ find . -name "*.java" -exec grep ManagedLocalsThread {} \; -print
import sun.misc.ManagedLocalsThread;
        dispatcherThread = new ManagedLocalsThread(dispatcher);
./share/classes/sun/net/httpserver/ServerImpl.java