old_contents: """Module with the main constants from Kytos.
  
  This constantes may be overridden by values passed on the controller
  instantiation.
  """
  # Min time (seconds) to send a new EchoRequest to a switch
  POOLING_TIME = 3
  CONNECTION_TIMEOUT = 70
  #: FLOOD_TIMEOUT in microseconds
  FLOOD_TIMEOUT = 100000
  
new_contents: """Module with the main constants from Kytos.
  
  These constants may be overridden by values passed on the controller
  instantiation.
  """
  CONNECTION_TIMEOUT = 70
  # FLOOD_TIMEOUT in microseconds
  FLOOD_TIMEOUT = 100000
  
subject: Remove unused constant (fix #80)