How to Remove Generic function in SALV?

Hi,

How we can remove a generic ALV function from CL_SALV_FUNCTION_TREE?

For example i need to remove FIND or EXPAND button from SALV TREE. and this ALV called inside a docking container.

I tried with REMOVE_FUNCTION then it is giving dump 'CX_SALV_WRONG_CALL' was raised.

Any suggestions to remove or hide will be appreciated.

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Note: Please don't suggest to use

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  g_tree->set_screen_status(
    pfstatus      =  'TREE'   " Custom PF status
    report        =  v_repid
    set_functions =  gr_tree->c_functions_default ).

Thanks

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