Don't emit signal file_removed_from_cluster with the "index" parameter.

picard/cluster.py

@@ -63,9 +63,8 @@ class Cluster(QtCore.QObject, Item):
     def remove_file(self, file):
         self.metadata['totaltracks'] -= 1
         self.metadata.length -= file.metadata.length
-        index = self.index_of_file(file)
         self.files.remove(file)
-        self.tagger.emit(QtCore.SIGNAL('file_removed_from_cluster'), self, file, index)
+        self.tagger.emit(QtCore.SIGNAL('file_removed_from_cluster'), self, file)
         if not self.special and self.get_num_files() == 0:
             self.tagger.remove_cluster(self)
 
@@ -75,9 +74,6 @@ class Cluster(QtCore.QObject, Item):
     def get_num_files(self):
         return len(self.files)
 
-    def index_of_file(self, file):
-        return self.files.index(file)
-
     def can_save(self):
         """Return if this object can be saved."""
         if self.files:

picard/ui/itemviews.py

@@ -217,7 +217,7 @@ class MainPanel(QtGui.QSplitter):
             items.append(item)
         cluster_item.addChildren(items)
 
-    def remove_file_from_cluster(self, cluster, file, index):
+    def remove_file_from_cluster(self, cluster, file):
         try:
             cluster_item = self.item_from_object(cluster)
         except KeyError: