Revert "Expose the framesPlayed attribute so progress can be tracked based on…" (#110)

This reverts commit a416cc8.

Author: dimitris-c

AudioStreaming/Streaming/Audio Entry/AudioEntry.swift

@@ -37,11 +37,6 @@ class AudioEntry {
         return seekTime + (Double(framesState.played) / outputAudioFormat.sampleRate)
     }
 
-    var framesPlayed: Int {
-        lock.lock(); defer { lock.unlock() }
-        return framesState.played
-    }
-
     var audioStreamFormat = AudioStreamBasicDescription()
 
     /// Hold the seek time, if a seek was requested

AudioStreaming/Streaming/AudioPlayer/AudioPlayer.swift

@@ -81,16 +81,6 @@ open class AudioPlayer {
         return entry.progress
     }
 
-    /// The number of audio frames that have been played
-    public var framesPlayed: Int {
-        guard playerContext.internalState != .pendingNext else { return 0 }
-        playerContext.entriesLock.lock()
-        let playingEntry = playerContext.audioPlayingEntry
-        playerContext.entriesLock.unlock()
-        guard let entry = playingEntry else { return 0 }
-        return entry.framesPlayed
-    }
-
     public private(set) var customAttachedNodes = [AVAudioNode]()
 
     /// The current configuration of the player.