Remove unused imports.

James William Pye · James William Pye · commit cd20f98e96ad · 2009-10-23T08:12:27.000-07:00
diff --git a/postgresql/cluster.py b/postgresql/cluster.py
@@ -15,10 +15,7 @@
 import time
 import io
 import subprocess as sp
-import warnings
 import tempfile
-from contextlib import closing
-from operator import attrgetter
 
 from . import api as pg_api
 from . import configfile
