RFR (S) 8240215: Shenandoah: remove ShenandoahAllocationTrace

[Roman Kennke]

Ok by me.

Thanks,
Roman

On 2/28/20 10:40 AM, Aleksey Shipilev wrote:
> RFR:
>   https://bugs.openjdk.java.net/browse/JDK-8240215
> 
> This was the experimental option to look in the performance of allocation path. It is not needed
> anymore, and attempt to turn it on in production would probably introduce performance bottlenecks.
> It is safer to remove it, and partially locally revert later if needed.
> 
> Webrev:
>   https://cr.openjdk.java.net/~shade/8240215/webrev.01/
> 
> Testing: hotspot_gc_shenandoah {fastdebug,release}
>