RFR(s): 8236766: Remove un-used oops do and drain list in VM thread.

[Robbin Ehn]

Thanks David!

/Robbin

On 1/10/20 10:58 AM,  wrote:
> Looks good!
> 
> Thanks,
> David
> 
> On 10/01/2020 7:35 pm, Robbin Ehn wrote:
>> Hi all, please review.
>>
>> We have removed all oops and oops do from the VM operations.
>> We can now remove the oops do on VM op base class, oops do on VM queue and the 
>> drain list.
>>
>> Note that I also removed the unused VMOperationQueue::verify_queue.
>>
>> Issue:
>> https://bugs.openjdk.java.net/browse/JDK-8236766
>>
>> Changeset:
>> http://cr.openjdk.java.net/~rehn/8236766/v1/webrev/index.html
>>
>> Passes t1-3.
>>
>> Thanks, Robbin