Don't load cast module when seeking

renderer/lib/cast.js

@@ -14,8 +14,7 @@ module.exports = {
   stopCasting,
   playPause,
   seek,
-  setVolume,
-  isCasting
+  setVolume
 }
 
 // Callback to notify module users when state has changed
@@ -285,13 +284,6 @@ function stoppedCasting () {
   update()
 }
 
-// Checks whether we are connected and already casting
-// Returns false if we not casting (state.playing.location === 'local')
-// or if we're trying to connect but haven't yet ('chromecast-pending', etc)
-function isCasting () {
-  return state.playing.location === 'chromecast' || state.playing.location === 'airplay' || state.playing.location === 'dlna'
-}
-
 function getDevice (location) {
   if (location && state.devices[location]) {
     return state.devices[location]