How to delete a datasource from my report

 Hello I have a file that contains an excel table as a data source, but I no longer use that table as a data source. And when I put the report to update via Gateway it asks me to configure the gateway pointing to the table. How can I get this excel data source out of my document, leaving only the MySQL data source?

I need to delete "d:\tabelas de apoio 0 tools.xlsx

Thanks!