Change 251800 was too aggressive with removing information on
"Patch set $N: ...: lines. For normal votes the removal was fine,
because it was redundant information. But the dedicated vote chips
did not work for vote removals. So with this change we keep being
aggressive and remove the entire "Patch Set $N: ..." line, but we
create vote chips also for vote removals.
Change-Id: Ia721552f08528c76bde469ed85b76d12783b761b