Hi,
Unfortunately we are not aware of a possible workaround to remove this warning.
Please note that Google is phasing out support for Internet Explorer 11 in the Google Maps JavaScript API. As TMS VCL WebGMaps is based on the IE engine, the mapping functionality might stop working in the near future.
Please consider using TMS FNC Maps instead:
TMS FNC Maps does not have this issue as it is based on the Edge Chromium browser engine.