@diano4ka,
To hide the axis line and tick you can set the lineThickness and tickLength to 0, as shown in the code snippet below.
axisY: {
tickLength: 0,
lineThickness: 0,
labelFormatter: function(){
return " ";
}
}
Also, kindly take a look at this JSFiddle for a working sample of the same.

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Sachin Bisht
Team CanvasJS