Trivial changes suggested by pylint

Change-Id: I313d2838c292fa5791816102fcf57eb2641da99f
diff --git a/config/config.py b/config/config.py
index 4cf06c2..1b61f01 100644
--- a/config/config.py
+++ b/config/config.py
@@ -29,7 +29,7 @@
     sys.path.insert(0, vlandpath)
     sys.path.insert(0, "%s/.." % vlandpath)
 
-from errors import CriticalError, InputError, ConfigError
+from errors import ConfigError
 
 class DaemonConfigClass:
     """ Simple container for stuff to make for nicer syntax """
@@ -170,9 +170,9 @@
         pass
 
 if __name__ == '__main__':
-    config = VlanConfig(filenames=('./vland.cfg',))
-    print config.database
-    print config.vland
-    for switch in config.switches:
-        print config.switches[switch]
+    c = VlanConfig(filenames=('./vland.cfg',))
+    print c.database
+    print c.vland
+    for switch in c.switches:
+        print c.switches[switch]