Is that possible to remove the tooltip hover dash line?

[MaBoCoMark]

I want to disable the vertical dash line (like the 2012 in the image).

I've tried to disable tooltip on xaxis and yaxis, but only the bubbles (like the 2012 and 0.9 bubble based on cursor position) disappeared but not the vertical line. also don't know why the horizontal line do disappeared.

Here's my modification code:

    xaxis: {
        tooltip:{enabled:false}, //added a new line
    },
    yaxis: [
        {
            seriesName: 'Income',
            tooltip:{enabled:false},
        },//added tooltip option for all 3 series in the demo

Screenshot from Official Demo when hovering on the blue bar of 2012.

Tried to search in all issues list by using keywords, but didn't found solution this time :( maybe wrong keywords combination.