removed zmq from requirements files.

etc/requirements.txt

@@ -2,13 +2,6 @@ msgpack-python==0.1.12
 humanhash==0.0.1
 iso8601==0.1.4
 
-# ZeroMQ
-pyzmq==2.1.11
-gevent-zeromq==0.2.2
-
-# Unix
-setproctitle==1.1.6
-
 # Logging
 Logbook==0.3
 

etc/requirements_sci.txt

@@ -16,5 +16,3 @@ patsy==0.1.0
 statsmodels>=0.5.0
 scikit-learn==0.11
 
-# ZeroMQ
-pyzmq==2.1.11

zipline/utils/protocol_utils.py

@@ -5,7 +5,7 @@ from collections import MutableMapping
 
 def Enum(*options):
     """
-    Fast enums are very important when we want really tight zmq
+    Fast enums are very important when we want really tight
     loops. These are probably going to evolve into pure C structs
     anyways so might as well get going on that.
     """