Remove unneeded comment
This comment applies to most of our code.
This lock method won't be removed any time soon.
@@ -105,7 +105,6 @@ CONF.register_opts(nas_opts, group=configuration.SHARED_CONF_GROUP)
CONF.register_opts(volume_opts, group=configuration.SHARED_CONF_GROUP)
-# TODO(bluex): remove when drivers stop using it
def locked_volume_id_operation(f, external=False):
"""Lock decorator for volume operations.
