how to combine/simplify these multiple IF Statements?

[sh4il3sh]

I have below multiple IF statements which I want to see combined,
I tried using ELSEIF and CASE but its not applicable here because the comparison operator is <> instead of =

Below is the code:

        IF <ls_load>-atnam <> 'AA'.
          IF VALUE #( lt_num[ charact = 'AA' ]-value_from OPTIONAL ) IS INITIAL.
            DELETE lt_num WHERE charact = 'AA'.
          ENDIF.
        ENDIF.

        IF <ls_load>-atnam <> 'BB'.
          IF VALUE #( lt_num[ charact = 'BB' ]-value_from OPTIONAL ) IS INITIAL.
            DELETE lt_num WHERE charact = 'BB'.
          ENDIF.
        ENDIF.

        IF <ls_load>-atnam <> 'CC'.
          IF VALUE #( lt_num[ charact = 'CC' ]-value_from OPTIONAL ) IS INITIAL.
            DELETE lt_num WHERE charact = 'CC'.
          ENDIF.
        ENDIF.

[Tomas_Buryanek]

Hello, consider creating a method in this case. All three conditions looks same, just parameter 'AA'.