RFR: 8230796: Remove BarrierSet::oop_equals_operator_allowed()

[Per Liden]

On 9/10/19 12:50 PM, Aleksey Shipilev wrote:
> On 9/10/19 12:47 PM, Per Liden wrote:
>> BarrierSet::oop_equals_operator_allowed() is no longer specialized by any barrier set and can be
>> removed.
>>
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8230796
>> Webrev: http://cr.openjdk.java.net/~pliden/8230796/webrev.0
> 
> Yes, the only use was Shenandoah, and it is not need it anymore.
> 
> Looks good.

Thanks for reviewing.

Btw, as a follow up, I'm looking at removing 
oopDesc::equals()/equals_raw() and the related Access infrastructure, 
which should also be the same for all GCs now.

/Per