Remove Power BI free from Tenancy

Hi,

Any Idea how to remove the license for Powerbi free? we've already turned off the adhoc subscriptions used:

https://powerbi.microsoft.com/en-us/blog/ability-to-disable-free-sign-ups-for-the-free-power-bi/

but one of our tenants doesn't want to see the license on their O365 admin center / completely turn off the service. please see image below:

Please advise

Thanks