Removed calls of Pref360ControlPref -updateLED

The calls made to -updateLED were erroneous, and were causing strange behavior. This should fix issue #35 (of original project). The method -updateLED can be deleted now as it's not used, but it wasn't deleted here.
Merge pull request #37 from LRFLEW/patch-1

Removed calls of Pref360ControlPref -updateLED