Drop implementation to keep compatibility with Python 2.5

... because this library no longer supports such old python runtime.

Change-Id: Id662d6d68cac940f6d0f61ab49653e7642b3e190

Author: kajinamit

troveclient/client.py

@@ -40,11 +40,6 @@
 except ImportError:
     import simplejson as json
 
-# Python 2.5 compat fix
-if not hasattr(urlparse, 'parse_qsl'):
-    import cgi
-    urlparse.parse_qsl = cgi.parse_qsl
-
 osprofiler_web = importutils.try_import("osprofiler.web")