[meld] undo: Remove state assertions when clearing the undo sequence (ggo#152)

[Kai Willadsen <kaiw src gnome org>]

commit 2ac329a94581e742c04e53ae9d9b5dcbb252ebd7
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Fri Jan 19 06:12:44 2018 +1000

    undo: Remove state assertions when clearing the undo sequence (ggo#152)
    
    This assertion kind of makes sense, in that you *shouldn't* ever do
    this, but on the other hand the clear method here should absolutely work
    either way.
    
    This is because there are actually cases where we apparently get a
    user-action start without a user-action finish (e.g., in some file
    loading error cases). While I'm tempted to argue that this is a bug in
    the file load handling (in this case GtkSourceView), we also shouldn't
    be crashing here for no good reason.

 meld/undo.py | 3 ---
 1 file changed, 3 deletions(-)
---
diff --git a/meld/undo.py b/meld/undo.py
index eea229e8..8502eff3 100644
--- a/meld/undo.py
+++ b/meld/undo.py
@@ -90,10 +90,7 @@ class UndoSequence(GObject.GObject):
 
         If the sequence was previously able to undo and/or redo, the
         'can-undo' and 'can-redo' signals are emitted.
-
-        Raises an AssertionError if a group is in progress.
         """
-        assert self.group is None
         if self.can_undo():
             self.emit('can-undo', 0)
         if self.can_redo():