Remove unwanted Column in OOPS ALV Report

Some time we used some coulmn for some Manipulation , those columns is not required for USER, if you use SET_VISIBLE the column is not displayed by default but it will be available in Layout Screen.
if you set SET_TECHNICAL will not available even in Layout Screen.

Sample Code:

Data:
     gr_columns TYPE REF TO cl_salv_columns_table,
     gr_column TYPE REF TO cl_salv_column_table.

Set Technical Filed value as if_salv_c_bool_sap=>true

    TRY.
        gr_column ?= gr_columns->get_column( 'BEDAT' ).
        gr_column->set_technical( value = if_salv_c_bool_sap=>true ).
      CATCH cx_salv_not_found.
    ENDTRY.