trivial: remove unnecessary pass statements

wcs/liberty.py

@@ -38,7 +38,7 @@ class LibertyDirectory(qommon.liberty.LibertyDirectory):
                 try:
                     disco.initQuery()
                 except lasso.Error, error:
-                    pass # XXX: there is no defined error code on lasso side
+                    # there is no defined error code on lasso side :/
                     service = None
                 else:
                     disco.addRequestedServiceType(lasso.PP_HREF)

wcs/qommon/publisher.py

@@ -445,7 +445,6 @@ class QommonPublisher(Publisher):
 
         if debug_cfg.get('logger', False):
             self._app_logger = self.get_app_logger(force = True)
-            pass
         else:
             class NullLogger(object):
                 def error(*args): pass

wcs/qommon/sessions.py

@@ -266,7 +266,6 @@ class StorageSessionManager(QommonSessionManager):
             session = self.session_class.get(session_id)
         except KeyError:
             session = None
-            pass
         try:
             self.session_class.remove_object(session_id)
         except OSError:

wcs/qommon/storage.py

@@ -326,7 +326,6 @@ class StorableObject(object):
                 except OSError, error:
                     if error.errno != 17: # 17 == Directory exists
                         raise
-                    pass
             if self.id is None:
                 self.id = self.get_new_id(create=True)
                 new_object = True