Remove jdbi v2 openjdk8 build
Remove jdbi v2 openjdk8 build

Now that we use toolchains to select a jdk6, there's
little reason to select jdk8.  Whether we choose 7 or 8
we then immediately switch to 6, so it's just redundant work.

pennello/jdbi,hgschmie/jdbi,jdbi/jdbi,hgschmie/jdbi,john9x/jdbi,jdbi/jdbi,HubSpot/jdbi,HubSpot/jdbi,hgschmie/jdbi,jdbi/jdbi,john9x/jdbi,pennello/jdbi