Fix pylint with latest pylint version

Signed-off-by: Cole Robinson <crobinso@redhat.com>

virtManager/addhardware.py

@@ -926,7 +926,7 @@ class vmmAddHardware(vmmGObjectUI):
                 mod_list.append("tpm-spapr")
             else:
                 mod_list.append("tpm-tis")
-                if tpmversion == None or tpmversion != '1.2':
+                if tpmversion != '1.2':
                     mod_list.append("tpm-crb")
             mod_list.sort()
         return mod_list

virtManager/object/storagepool.py

@@ -273,7 +273,7 @@ class vmmStoragePool(vmmLibvirtObject):
         keymap = dict((o.get_connkey(), o) for o in self._volumes or [])
         def cb(obj, key):
             return vmmStorageVolume(self.conn, obj, key)
-        (ignore, ignore, allvols) = pollhelpers.fetch_volumes(
+        (dummy1, dummy2, allvols) = pollhelpers.fetch_volumes(
             self.conn.get_backend(), self.get_backend(), keymap, cb)
         self._volumes = allvols