Subtract the 2nd point from the 1st point and returns the result


[Missing <returns> documentation for M:Emgu.CV.Point`1.op_Subtraction(Emgu.CV.Point{`0},Emgu.CV.Point{`0})]
[Missing <returns> documentation for M:Emgu.CV.Point`1.op_Subtraction(Emgu.CV.Point{`0},Emgu.CV.Point{`0})]