RFR (trivial) 8209792: Remove ClassLoaderDataGraph::keep_alive_cld_do

[Thomas Schatzl]

Hi,

On Tue, 2018-08-21 at 10:23 -0400, coleen.phillimore at oracle.com wrote:
> Summary: unnecessary
> 
> Built without it, ran runThese -jck tests (with lots of class
> unloading).
> 
> open webrev at http://cr.openjdk.java.net/~coleenp/8209792.01/webrev
> bug link https://bugs.openjdk.java.net/browse/JDK-8209792
> 

  looks good and trivial.

Thomas