Revert some fabric changes to the build worker.

workers/dockerfilebuild.py

@@ -7,7 +7,6 @@ import digitalocean
 
 from apscheduler.scheduler import Scheduler
 from multiprocessing.pool import ThreadPool
-from fabric.api import env
 
 from data.queue import dockerfile_build_queue
 from data import model
@@ -61,7 +60,6 @@ def babysit_builder(request):
   repository_build.phase = 'initializing'
   repository_build.save()
 
-  env.host_string = 'root@%s' % droplet.ip_address
 
   # tell it to pull and run the buildserver