hg: build-infra/jdk8/jdk: Remove unused targets and makefiles.

[magnus.ihse.bursie at oracle.com]

Changeset: 9c4b9c2ce7a9
Author:    ihse
Date:      2012-06-04 15:13 +0200
URL:       http://hg.openjdk.java.net/build-infra/jdk8/jdk/rev/9c4b9c2ce7a9

Remove unused targets and makefiles.

! makefiles/Makefile
- makefiles/OldImages.gmk