I haven't checked the video but the articles don't address the customer need, "Saving a graph as an image file without the "graph builder" header in the image" using a script and not the user interface. The following function does the trick:
 
save_graph_only = function({gb, pic_file}, {Default Locals},
    rpt = gb << report;
    (rpt << Child) << save picture(pic_file);	
);
Here is a complete example:
Names Default to Here(1);
save_graph_only = function({gb, pic_file}, {Default Locals},
    rpt = gb << report;
    (rpt << Child) << save picture(pic_file);	
);
pic_file = "$TEMP/graph_no_outline.png";
dt = Open("$SAMPLE_DATA/Iris.jmp");
gb = dt << Graph Builder(
    Show Control Panel( 0 ),
    Variables( X( :Sepal length ), Y( :Sepal width ), Overlay( :Species ) ),
    Elements(
        Contour( X, Y, Legend( 3 ), Number of Levels( 3 ) ),
        Points( X, Y, Legend( 4 ) )
    ),
    SendToReport(
        Dispatch(
            {},
            "Sepal length",
            ScaleBox,
            {Min( 4.02451368343195 ), Max( 8.24903846153846 ), Inc( 1 ),
            Minor Ticks( 0 )}
        ),
        Dispatch(
            {},
            "Sepal width",
            ScaleBox,
            {Min( 1.75 ), Max( 5.00400457665904 ), Inc( 1 ), Minor Ticks( 0 )}
        ),
        Dispatch(
            {},
            "400",
            LegendBox,
            {Legend Position( {3, [0, 1, 2], 4, [-1, -1, -1]} ),
            Position( {0, 1, 2, -1, -1, -1} )}
        )
    )
);
save_graph_only(gb, pic_file);
dt << Close Window();
open(pic_file);