Clean up old config name aliases now that we don't use them.
Clean up old config name aliases now that we don't use them.

Change-Id: Iafd7c59f503c13e7a0b547943a9940887d84d285

BUG=None
TEST=None

Review URL: http://codereview.chromium.org/6580057

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