RFR: Remove idle-on-uncommit support

[Zhengyu Gu]

Okay.

Thanks,

-Zhengyu

On 10/08/2018 07:13 AM, Aleksey Shipilev wrote:
> http://cr.openjdk.java.net/~shade/shenandoah/remove-idle-uncommit/webrev.01/
> 
> This does not seem to be used by anyone, and it gives us additional upstream exposure. I propose we
> retract this experimental option. This reverts os_linux.cpp and os.* to upstream versions.
> 
> Testing: tier3_gc_shenandoah
> 
> Thanks,
> -Aleksey
> 
>