Get rid of some useless code

For some reason this argument parsing code in examples had
a useless if statement.

Change-Id: I9ef9fdb48f922b1fd95fafe0286de8f901b142a7

examples/common.py

@@ -117,13 +117,6 @@ class UserPreferenceAction(argparse.Action):
         var = var.replace('OS_API_', '')
         var = var.lower()
         for kvp in values.split(','):
-            if var == 'region':
-                if '=' in kvp:
-                    service, value = kvp.split('=')
-                else:
-                    service = cls.pref.ALL
-                    value = kvp
-            else:
             if '=' in kvp:
                 service, value = kvp.split('=')
             else: