Revert "Add paladin and release builder configs for board=kiev."
Revert "Add paladin and release builder configs for board=kiev."

This CL marks kiev paladin as important, which is wrong, because
the kiev buildbot has not yet been created. As a result, this means
that all preflight builds fail until the buildbot is created, which is
wrong.

BUG=chrome-os-partner:8434
TEST=none

Change-Id: I004666e5fa699d98c399438e21facac25e3c73be
Change-Id: I784253d4252703ab3bb9d815248272651189e5c1
Reviewed-on: https://gerrit.chromium.org/gerrit/18553
Reviewed-by: Ryan Cui <5ce1592d53754a87a44fc2eb7b63d5f77cf50fdb@chromium.org>
Tested-by: David James <f231dc574bbeb62604660cbc162d1b8642a0a3af@chromium.org>

bpsinc-native/src_third_party_chromite,zhang0137/chromite,zhang0137/chromite,coreos/chromite,bpsinc-native/src_third_party_chromite,zhang0137/chromite,coreos/chromite,chadversary/chromiumos.chromite,coreos/chromite,bpsinc-native/src_third_party_chromite,chadversary/chromiumos.chromite