Hi Nikhil,
Can you check if any column view exists in the _SYS_BIC of the Calculation view that was not deleted due to some reason.
Also, please check in ACTIVE_OBJECT and INACTIVE_OBJECT tables in _SYS_REPO for the calculation view if it exists.
If it exists in any of them,you can execute sql to delete them and then try to delete the analytic view.
Regards,
Anjali.