docs/conf.py
def _warn_node(self, msg, *args, **kwargs):
    """Do not warn on external images."""
    if not msg.startswith('nonlocal image URI found:'):
        _warn_node_old(self, msg, *args, **kwargs)
def _warn_node(self, msg, *args, **kwargs):
    """Do not warn on external images."""
    if not msg.startswith('nonlocal image URI found:'):
        _warn_node_old(self, msg, *args, **kwargs)
Do not warn on external images.