Callback: remove obsolete exception

mask from testing

pwman/util/callback.py

@@ -1,15 +1,15 @@
 #============================================================================
 # This file is part of Pwman3.
-# 
+#
 # Pwman3 is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License, version 2
-# as published by the Free Software Foundation; 
-# 
+# as published by the Free Software Foundation;
+#
 # Pwman3 is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU General Public License
 # along with Pwman3; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
@@ -20,16 +20,19 @@
 # Copyright (C) 2006 Ivan Kelly <ivan@ivankelly.net>
 #============================================================================
 
-"""Callback interface
+"""
+Callback interface
 To be used when UI needs to be back to get info from user.
 """
 
-class Callback:
+
+# this class is just a base class no real method to test
+class Callback(object):  # pragma: no cover
     """Callback interface. Callback classes must implement this."""
     def getinput(self, question):
         """Return text"""
         pass
-    
+
     def getsecret(self, question):
         """Return key"""
         pass
@@ -45,11 +48,3 @@ class Callback:
     def notice(self, warning):
         """Present notice to user"""
         pass
-
-
-class CallbackCancelException(Exception):
-    def __init__(self, message):
-        self.message = message
-    def __str__(self):
-        return "CallbackCancelException: %s" % (self.message)
-