RFR (sh/jdk11): [backport] 8224043: Shenandoah: Remove clear_claimed_marks() from start of concurrent_traversal()

[Aleksey Shipilev]

On 5/16/19 10:32 PM, Roman Kennke wrote:
> Let's backport today's change to remove clear_claimed_marks() to jdk11.
> 
> Testing: hotspot_gc_shenandoah and some point-testing specjvm
> 
> Ok?

OK.

-Aleksey