Deleting Unused RKF, CKF & Characteristic Value Variables

Hi All

We have a requirement to clean up all the unused RKF (Restricted Key figures), CKF and Variables from the BI 7.0 System.

Is there any better way to find out the above mentioned Unused Object List (from any tables......) & deleting them via some standard Function Module ?

The option of finding them from Query Designer's ' where used option ' would be very time consuming & hence please suggest some better way.

Thanks in Advance.

Regards

Swapnil