main: Remove sys.path modification

mopidy/__main__.py

@@ -30,12 +30,6 @@ mopidy_args = [arg for arg in sys.argv[1:] if not is_gst_arg(arg)]
 sys.argv[1:] = gstreamer_args
 
 
-# Add ../ to the path so we can run Mopidy from a Git checkout without
-# installing it on the system.
-sys.path.insert(
-    0, os.path.abspath(os.path.join(os.path.dirname(__file__), '../')))
-
-
 from mopidy import exceptions, settings
 from mopidy.audio import Audio
 from mopidy.config import default_config, config_schemas