Remove group management

app.py

@@ -274,7 +274,7 @@ def api_avr_set_input():
 @handle_errors
 def api_spotify_devices():
     """Diagnostic: every Spotify Connect receiver one account currently sees
-    (?account=fifou) -- use this to fill in a target's spotify_name if it
+    (?account=account1) -- use this to fill in a target's spotify_name if it
     differs from heos_name."""
     return jsonify(_spotify_from(request.args).devices())