message: Remove unnecessary specification for default kernel name
diff: @@ -18,7 +18,6 @@ from IPython.lib import passwd
  c.NotebookApp.ip = '*'
  c.NotebookApp.port = int(os.getenv('PORT', 8888))
  c.NotebookApp.open_browser = False
  -c.MultiKernelManager.default_kernel_name = 'python2'
  # sets a password if PASSWORD is set in the environment
  if 'PASSWORD' in os.environ:
  