hg: jdk10/hs/hotspot: 8185746: Remove Mutex destructor assertion

[kim.barrett at oracle.com]

Changeset: c99a4c62c22d
Author:    kbarrett
Date:      2017-08-07 18:50 -0400
URL:       http://hg.openjdk.java.net/jdk10/hs/hotspot/rev/c99a4c62c22d

8185746: Remove Mutex destructor assertion
Summary: Remove unneeded ~Mutex(), improve assertion msg in ~Monitor.
Reviewed-by: dholmes, coleenp, tschatzl

! src/share/vm/runtime/mutex.cpp
! src/share/vm/runtime/mutex.hpp