Simplify rounded Edges

I have complex meshes with rounded Edges. My goal is to reduce the number of verticles, edges an faces of the meshes while maintaining the "fine-looking" of the meshes (that's why I'm not using a modifier like decimate for example). Therefore I'm trying to simplify the rounded edges. So for example, I have this edge:

and I simplify it like on the following image.

For the moment, I'm doing this by selecting "a vertical line of edges" and collapsing them. My Question is: Is there a way that allows me to do it faster? A plugin maybe? I searched but did not find anything that answer my question. My way to simplify all the rounded edges is really, really slow.