Hi Ram,
Redefine context node implementation class CL_BT111H_O_CUBTPARTNERCU_CTXT and redefine Prepare_filter method.
Copy the existing code and remove partner functions derived from standard after FM call COM_PARTNER_FUNCTION_TO_DISPLAY_UI.
P.S. run your code on conditional basis ( transaction type .. partner determination procedure etc. )
Regards
Pratyush Ravi
