interface: Drop ceilometerclient dependency

We weren't using this since the usage collection rewrite.

Change-Id: I456ceedb70eaeca9da05d7bf892014f33a3c509d

artifice/interface.py

@@ -1,7 +1,6 @@
 import requests
 import json
 import auth
-from ceilometerclient.v2.client import Client as ceilometer
 from artifice.models import resources
 from constants import date_format
 import config
@@ -31,14 +30,6 @@ class Artifice(object):
             insecure=config.auth["insecure"]
         )
 
-        self.ceilometer = ceilometer(
-            config.ceilometer["host"],
-            # Uses a lambda as ceilometer apparently wants
-            # to use it as a callable?
-            token=lambda: self.auth.auth_token,
-            insecure=config.auth["insecure"]
-        )
-
     @property
     def tenants(self):
         """All the tenants in our system"""

requirements.txt

@@ -24,7 +24,6 @@ pbr==0.6
 prettytable==0.7.2
 psycopg2==2.5.2
 pyaml==13.07.0
-python-ceilometerclient==1.0.3
 python-keystoneclient==0.3.2
 python-novaclient==2.17.0
 pytz==2013.9