Hi @pierrebalian,
I hope you are well today and thank you for your question.
If it is displaying on shop page then you can try removing it by using the solution posted in the following topic.
https://colorlibsupport.com/t/change-title-shop-page/
If it is not shop page then could you please share me the page URL from your site where it is displaying so that i can help you to remove it?
Kind Regards,
Movin