Cleanup error handling of bad GStreamer settings.

No need to have a GStreamerError, we can just let the GErrors bubble now that
we are initialising in the main thread.

Conflicts:

	mopidy/gstreamer.py

mopidy/core.py

@@ -20,7 +20,7 @@ sys.argv[1:] = gstreamer_args
 
 from mopidy import (get_version, settings, OptionalDependencyError,
     SettingsError, DATA_PATH, SETTINGS_PATH, SETTINGS_FILE)
-from mopidy.gstreamer import GStreamer, GStreamerError
+from mopidy.gstreamer import GStreamer
 from mopidy.utils import get_class
 from mopidy.utils.deps import list_deps_optparse_callback
 from mopidy.utils.log import setup_logging
@@ -46,8 +46,6 @@ def main():
         loop.run()
     except SettingsError as e:
         logger.error(e.message)
-    except GStreamerError as e:
-        logger.error(e)
     except KeyboardInterrupt:
         logger.info(u'Interrupted. Exiting...')
     except Exception as e:

mopidy/gstreamer.py

@@ -11,13 +11,10 @@ from pykka.registry import ActorRegistry
 from mopidy import settings
 from mopidy.backends.base import Backend
 
+
 logger = logging.getLogger('mopidy.gstreamer')
 
 
-class GStreamerError(Exception):
-    pass
-
-
 class GStreamer(ThreadingActor):
     """
     Audio output through `GStreamer <http://gstreamer.freedesktop.org/>`_.