Delete Adaptation Project in S/4 on-premise SAP UI 7.54

Hello SAP BAS Team,

I need to Delete an Adaptation Project on the backend but my system is on SAP UI 7.54 and not in SAP UI 7.55, so I can't use report /UI5/DEL_ADAPTATION_PROJECT.

Is it another way to delete the app variant?

I need to deploy a newer version of the app variant but as mentioned in here Deploy an Adaptation Project, I must delete the previous version.

Kind regards,