fixed metronom to be more accurate

android/ConductorsPhone/app/src/main/java/de/tonifetzer/conductorswatch/Metronome.java

@@ -1,8 +1,6 @@
 package de.tonifetzer.conductorswatch;
 
 import android.content.Context;
-import android.media.AudioManager;
-import android.media.MediaPlayer;
 import android.media.SoundPool;
 
 import java.util.TimerTask;
@@ -18,7 +16,7 @@ public class Metronome extends TimerTask {
     boolean loaded = false;
     private int soundID;
 
-    public Metronome(Context context){
+    public Metronome(Context ){
         soundPool = new SoundPool.Builder().setMaxStreams(10).build();
         soundPool.setOnLoadCompleteListener(new SoundPool.OnLoadCompleteListener() {
             @Override