help me remove this additional parameter in url

The issue is caused by woocommerce.

Woocommerce has a setting called Geolocate (with page caching support) which adds this parameter to every your url.

The said option can be found in your dashboard at:

Woocommerce → Settings → General → Default Customer Location

Selecting any option apart from Geolocate (with page caching support) should resolve the issue