Remove toybuilders from former engineers

Change-Id: I409f0ed6c5ba58b2a0743f158ee18d99d9042cfe
Reviewed-on: http://review.couchbase.org/28927
Reviewed-by: Dustin Sallings <dustin@spy.net>
Tested-by: Trond Norbye <trond.norbye@gmail.com>