system_manager: cleanup

select python via /usr/bin/env

Change-Id: I426a8947e277892c3084ef08c246e98b625c3d10
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/pysystemmgr/system_manager.py b/pysystemmgr/system_manager.py
index 2dfd225..fe786e5 100644
--- a/pysystemmgr/system_manager.py
+++ b/pysystemmgr/system_manager.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python -u
+#!/usr/bin/env python
 
 import gobject
 import dbus