Remove unnecessary constructors for exceptions

They are unnecessary and end up just adding extra code

Change-Id: I1aa6e7be7640dfc0e5fb05a2d662fa42d2cd82c3

nova/exception.py

@@ -76,8 +76,7 @@ class ProcessExecutionError(IOError):
 
 
 class Error(Exception):
-    def __init__(self, message=None):
-        super(Error, self).__init__(message)
+    pass
 
 
 class EC2APIError(Error):
@@ -207,9 +206,6 @@ class MelangeConnectionFailed(NovaException):
 class NotAuthorized(NovaException):
     message = _("Not authorized.")
 
-    def __init__(self, *args, **kwargs):
-        super(NotAuthorized, self).__init__(*args, **kwargs)
-
 
 class AdminRequired(NotAuthorized):
     message = _("User does not have admin privileges")
@@ -406,9 +402,6 @@ class InvalidEc2Id(Invalid):
 class NotFound(NovaException):
     message = _("Resource could not be found.")
 
-    def __init__(self, *args, **kwargs):
-        super(NotFound, self).__init__(*args, **kwargs)
-
 
 class FlagNotSet(NotFound):
     message = _("Required flag %(flag)s not set.")
@@ -911,11 +904,8 @@ class ImageTooLarge(NovaException):
     message = _("Image is larger than instance type allows")
 
 
-class ZoneRequestError(Error):
-    def __init__(self, message=None):
-        if message is None:
-            message = _("1 or more Zones could not complete the request")
-        super(ZoneRequestError, self).__init__(message=message)
+class ZoneRequestError(NovaException):
+    message = _("1 or more Zones could not complete the request")
 
 
 class InstanceTypeMemoryTooSmall(NovaException):

nova/scheduler/api.py

@@ -259,7 +259,7 @@ class RedirectResult(exception.Error):
     def __init__(self, results):
         self.results = results
         super(RedirectResult, self).__init__(
-               message=_("Uncaught Zone redirection exception"))
+               _("Uncaught Zone redirection exception"))
 
 
 class reroute_compute(object):