RFR (S/M): 8231670: Remove TaskExecutor abstraction used in preserved marks processing

[Kim Barrett]

> On Dec 17, 2019, at 8:19 AM, Thomas Schatzl <thomas.schatzl at oracle.com> wrote:
> 
> Hi all,
> 
>  can I get reviews for this cleanup of the preserved marks handling that removes the unnecessary TaskExecutor "framework". This code is obsolete since parallel gc also uses WorkGangs (JDK-8204951).
> 
> CR:
> https://bugs.openjdk.java.net/browse/JDK-8231670
> Webrev:
> http://cr.openjdk.java.net/~tschatzl/8231670/webrev/
> Testing:
> hs-tier1-5 almost completed without issues
> 
> Thanks,
>  Thomas

Looks good.