RFR: 8253275: Remove unused methods after CMS removal

[Thomas Schatzl]

Hi,

On 17.09.20 10:24, Aleksey Shipilev wrote:
> Static analysis shows a few examples of methods that are not used/implemented after CMS removal. We can purge them.
> 
> Testing: text searches over the code base, no hits; Linux x86_64 builds

Please also remove Generation::sample_eden_chunk(). There is apparently 
no one overriding this empty method.

Thanks,
   Thomas