RFR: 8219817: Remove unused CollectedHeap::block_size()

[Per Liden]

Thanks Stefan!

/Per

On 3/6/19 1:17 PM, Stefan Karlsson wrote:
> Looks good.
> 
> StefanK
> 
> On 2019-02-27 09:47, Per Liden wrote:
>> CollectedHeap::block_size() is never called. We should remove it and 
>> the implementations provided by the different collectors.
>>
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8219817
>> Webrev: http://cr.openjdk.java.net/~pliden/8219817/webrev.0
>>
>> /Per