revert accidental checkin to completer.py

IPython/completer.py

@@ -620,8 +620,8 b' class IPCompleter(Completer):'
             except IndexError:
                 return None
         except:
-            from IPython.ultraTB import AutoFormattedTB; # dbg
-            tb=AutoFormattedTB('Verbose');tb() #dbg
+            #from IPython.ultraTB import AutoFormattedTB; # dbg
+            #tb=AutoFormattedTB('Verbose');tb() #dbg
 
             # If completion fails, don't annoy the user.
             return None