cbuildbot_config.py: remove all parrot32 and parrot64 configs
cbuildbot_config.py: remove all parrot32 and parrot64 configs

This CL removes all chromite reverences to parrot32 and parrot64.
It should land after https://codereview.chromium.org/27572002/

BUG=chromium:307679
TEST='parrot32' and 'parrot64' strings no longer exist within
chromite repo

Change-Id: I972a68c80163cf52c23b0d393b9db7ab06e2e349
Reviewed-on: https://chromium-review.googlesource.com/173550
Reviewed-by: Peter Mayo <3d31fdaf44dc55bb1b4f50b19df9bc879177d37a@chromium.org>
Tested-by: Peter Mayo <3d31fdaf44dc55bb1b4f50b19df9bc879177d37a@chromium.org>

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