RFR: 8234438: Remove some CMS leftovers

[Kim Barrett]

> On Nov 19, 2019, at 6:24 PM, Per Liden <per.liden at oracle.com> wrote:
> 
> The following files has some CMS leftovers that can be removed. I'm sure there are more things like this here and there. I just happened to run across these while working on a different patch.
> 
> src/hotspot/share/gc/shared/space.cpp
> src/hotspot/share/gc/shared/space.hpp
> src/hotspot/share/gc/shared/space.inline.hpp
> src/hotspot/share/memory/freeList.hpp
> src/hotspot/share/memory/iterator.hpp
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8234438
> Webrev: http://cr.openjdk.java.net/~pliden/8234438/webrev.0
> 
> /Per

Looks good.