RFR: Two small C2 cleanups

[Aleksey Shipilev]

On 11/29/18 12:53 PM, Roman Kennke wrote:
> Ok, now the merge is in, and the only remaining changes in those files
> are the ones that I mentioned, and it's not our business to fix them (in
> sh/jdk) at this point.
> 
> Also, removed on gratuitous include from compile.cpp:
> 
> http://cr.openjdk.java.net/~rkennke/c2-cleanups-11-2018/webrev.00/

OK!

-Aleksey