(S) RFR: 8150506: Remove unused locks

[Coleen Phillimore]

Nice!
Coleen

On 2/24/16 2:03 AM, David Holmes wrote:
> I stumbled across the fact that the following locks are no longer 
> being used in the VM:
>
> Runtime:
>  - Interrupt_lock
>  - ProfileVM_lock
>  - ObjAllocPost_lock
>
> Serviceability:
>  -JvmtiPendingEvent_lock
>
> GC:
> - CMark_lock
> - CMRegionStack_lock
>
> so unless there are objections I will remove them. A reviewer from 
> each area would be appreciated.
>
> bug: https://bugs.openjdk.java.net/browse/JDK-8150506
>
> webrev: http://cr.openjdk.java.net/~dholmes/8150506/webrev/
>
> Thanks,
> David