kiji-schema: BENTO-88. All "kiji" commands from Bento Box die silently for me (OS X) unless I delete the update informer code from the kiji shell script

issue: https://jira.kiji.org/browse/BENTO-88
review: https://review.kiji.org/r/1997
commit: https://github.com/kijiproject/kiji-schema/commit/de7a29f57c9f8caf3e7a4b297b42981ebcfddad3