Don't force building recovery - fixing a 4.4.3 merge derp

Some devices don't have a recovery.img - for example, Xperia Z etc.
This patch comments this out, as it was before the automerge

Change-Id: Ib9c123437cd616551818d3d70d3ff5957ae207fe
Merge remote-tracking branch 'upstream/kk4.4' into kk4.4-mo4