Remove redundancy in ledd (sonic-net#12)

sonic-ledd/scripts/ledd

@@ -156,8 +156,6 @@ def load_platform_led_control_module():
 #=============================== Main ================================
 
 def main():
- port_status_dict = {}
-
  log_info("Starting up...")
 
  if not os.geteuid() == 0:
@@ -201,8 +199,7 @@ def main():
 
  # Loop forever
  while True:
- # TODO: Move dictionary creation and population out of while loop. Do it only once
- # and subscribe for notifications from DB when ports come or go. Add/remove
+ # TODO: Subscribe for notifications from DB when ports come or go. Add/remove
  # dictionary entries as necessary.
 
  # Get a list of all ports from the database
@@ -219,16 +216,8 @@ def main():
  if port_name in ["PortConfigDone", "PortInitDone"]:
  continue
 
- port_status_dict[port_name] = 'down'
- led_control.port_link_state_change(port_name, port_status_dict[port_name])
-
- for (key, value) in port_status_dict.iteritems():
- status = swss.get(swss.APPL_DB, PORT_TABLE_PREFIX + key, 'oper_status')
-
- # If the status has changed, update it in our dictionary and report to our plugin
- if value != status:
- port_status_dict[key] = status
- led_control.port_link_state_change(key, status)
+ status = swss.get(swss.APPL_DB, PORT_TABLE_PREFIX + port_name, 'oper_status')
+ led_control.port_link_state_change(key, status)
 
  time.sleep(1)