remove unreasonable sanity check

    if ( arg.customLsOutputEnabled )

    {

#ifdef FIX_351_HRTF_COMMAND

        /* sanity check */

        if ( arg.outputFormat != IVAS_DEC_OUTPUT_LS_CUSTOM )

        {

            fprintf( stderr, "\nError: Custom loudspeaker setup cannot be used in this output configuration.\n\n" );

            goto cleanup;

        }

#endif

        if ( ( error = CustomLsReader_open( arg.customLsSetupFilename, &hLsCustomReader ) ) != IVAS_ERR_OK )

        {

            fprintf( stderr, "\nError: Can't open Custom loudspeaker setup file %s \n\n", arg.customLsSetupFilename );