The sensor parameter has already been removed from the development version of the plugin, but unfortunately we haven’t released an update yet. In the next plugin update, this warning will be resolved.
To make the changes yourself in the /wp-content/plugins/pronamic-google-maps/ directory through FTP, please see https://github.com/pronamic/wp-pronamic-google-maps/commit/7a5c480b773548ce252a1dcd87abdb113477b3db for the specific changes.
Please note that – except for the console warning – there aren’t any differences in the plugin based on this sensor parameter. Google first required the parameter, now they don’t. They chose to inform users of this change through a console warning, but it’s not really an “error” if the parameter is still send.
