@ragu1991nathan,
By default, axis reserves some space around it which can be removed by setting margin: -5
. You can also achieve the same by returning an empty string in labelFormatter as shown below –
labelFormatter: function(e) {
return "";
}
Please take a look at this updated JSFiddle for a working example with complete code.

___________
Indranil Singh Deo
Team CanvasJS