remove redundant time_to_dead from IOLoopKernelRestarter

IPython/kernel/ioloop/restarter.py

@@ -1,59 +1,55 b''
 """A basic in process kernel monitor with autorestarting.
 
 This watches a kernel's state using KernelManager.is_alive and auto
 restarts the kernel if it dies.
 """
 
 #-----------------------------------------------------------------------------
 #  Copyright (C) 2013  The IPython Development Team
 #
 #  Distributed under the terms of the BSD License.  The full license is in
 #  the file COPYING, distributed as part of this software.
 #-----------------------------------------------------------------------------
 
 #-----------------------------------------------------------------------------
 # Imports
 #-----------------------------------------------------------------------------
 
 from __future__ import absolute_import
 
 import zmq
 from zmq.eventloop import ioloop
 
 
 from IPython.kernel.restarter import KernelRestarter
 from IPython.utils.traitlets import (
     Instance, Float, List,
 )
 
 #-----------------------------------------------------------------------------
 # Code
 #-----------------------------------------------------------------------------
 
 class IOLoopKernelRestarter(KernelRestarter):
     """Monitor and autorestart a kernel."""
 
     loop = Instance('zmq.eventloop.ioloop.IOLoop', allow_none=False)
     def _loop_default(self):
         return ioloop.IOLoop.instance()
 
-    time_to_dead = Float(3.0, config=True,
-        help="""Kernel heartbeat interval in seconds."""
-    )
-
     _pcallback = None
 
     def start(self):
         """Start the polling of the kernel."""
         if self._pcallback is None:
             self._pcallback = ioloop.PeriodicCallback(
                 self.poll, 1000*self.time_to_dead, self.loop
             )
             self._pcallback.start()
 
     def stop(self):
         """Stop the kernel polling."""
         if self._pcallback is not None:
             self._pcallback.stop()
             self._pcallback = None