Fix execute status of cleanup script files

cleanup.py should be executable, cleanup_service.py is a module.

Change-Id: Ibb8e06a0165d9b2f42c1aeec8bf639227a5480d3
diff --git a/tempest/cmd/cleanup.py b/tempest/cmd/cleanup.py
old mode 100644
new mode 100755
diff --git a/tempest/cmd/cleanup_service.py b/tempest/cmd/cleanup_service.py
index 0d3c6c6..8adfbef 100644
--- a/tempest/cmd/cleanup_service.py
+++ b/tempest/cmd/cleanup_service.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python
-
 # Copyright 2014 Dell Inc.
 #
 #    Licensed under the Apache License, Version 2.0 (the "License"); you may