The only way is a work around, which isn't hard and "Isn't Automatic" and that is;
Select the line that you want to hide and make it white, that way it won't print on white paper and if you have your drawing background anything but white it'll show on the screen...
You can convert all bending lines to sketch using convert entity function and then turn off the sketches from view, then delete the lines which are not required.
I think it would be good to know the reasoning for hiding only one bendline. would you be able to post an example or screenshot of what you are trying to achieve?
I don´t know how you made the part, but one way would be with a sketch on top in the drawing and hide the bend lines sketch.