Remove unused destroy() methods from backend controllers and providers

docs/changes.rst

@@ -50,6 +50,12 @@ v0.6.0 (in development)
 
 - Unescape all incoming MPD requests. (Fixes: :issue:`113`)
 
+**multi-backend changes**
+
+- Remove `destroy()` methods from backend controller and provider APIs, as it
+  was not in use and actually not called by any code. Will reintroduce when
+  needed.
+
 
 v0.5.0 (2011-06-15)
 ===================

mopidy/backends/base/current_playlist.py

@@ -21,10 +21,6 @@ class CurrentPlaylistController(object):
         self._cp_tracks = []
         self._version = 0
 
-    def destroy(self):
-        """Cleanup after component."""
-        pass
-
     @property
     def cp_tracks(self):
         """

mopidy/backends/base/library.py

@@ -16,10 +16,6 @@ class LibraryController(object):
         self.backend = backend
         self.provider = provider
 
-    def destroy(self):
-        """Cleanup after component."""
-        self.provider.destroy()
-
     def find_exact(self, **query):
         """
         Search the library for tracks where ``field`` is ``values``.
@@ -89,14 +85,6 @@ class BaseLibraryProvider(object):
     def __init__(self, backend):
         self.backend = backend
 
-    def destroy(self):
-        """
-        Cleanup after component.
-
-        *MAY be implemented by subclasses.*
-        """
-        pass
-
     def find_exact(self, **query):
         """
         See :meth:`mopidy.backends.base.LibraryController.find_exact`.

mopidy/backends/base/playback.py

@@ -82,12 +82,6 @@ class PlaybackController(object):
         self.play_time_accumulated = 0
         self.play_time_started = None
 
-    def destroy(self):
-        """
-        Cleanup after component.
-        """
-        self.provider.destroy()
-
     def _get_cpid(self, cp_track):
         if cp_track is None:
             return None
@@ -559,14 +553,6 @@ class BasePlaybackProvider(object):
     def __init__(self, backend):
         self.backend = backend
 
-    def destroy(self):
-        """
-        Cleanup after component.
-
-        *MAY be implemented by subclasses.*
-        """
-        pass
-
     def pause(self):
         """
         Pause playback.

mopidy/backends/base/stored_playlists.py

@@ -17,10 +17,6 @@ class StoredPlaylistsController(object):
         self.backend = backend
         self.provider = provider
 
-    def destroy(self):
-        """Cleanup after component."""
-        self.provider.destroy()
-
     @property
     def playlists(self):
         """
@@ -133,14 +129,6 @@ class BaseStoredPlaylistsProvider(object):
         self.backend = backend
         self._playlists = []
 
-    def destroy(self):
-        """
-        Cleanup after component.
-
-        *MAY be implemented by subclass.*
-        """
-        pass
-
     @property
     def playlists(self):
         """