RFR(T) 8225514: Shenandoah: ShenandoahCodeRoots should inherit from AllStatic

[Aleksey Shipilev]

On 6/10/19 2:44 PM, Zhengyu Gu wrote:
> A trivial cleanup.
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8225514
> Webrev: http://cr.openjdk.java.net/~zgu/JDK-8225514/webrev.00/

Yup, good!

-Aleksey