Do not look in cache in readCoverBitmap

vlc-android/src/org/videolan/vlc/gui/helpers/AudioUtil.java

@@ -382,9 +382,7 @@ public class AudioUtil {
             return null;
         if (path.startsWith("file"))
             path = path.substring(7);
-        Bitmap cover = BitmapCache.getInstance().getBitmapFromMemCache(path);
-        if (cover != null)
-            return cover;
+        Bitmap cover = null;
         BitmapFactory.Options options = new BitmapFactory.Options();
 
         /* Get the resolution of the bitmap without allocating the memory */