Add ability to delete multiple template point's constrains at once while editing the Transition Midpoint

While editing the Transition Midpoint, we need to delete both the constraints of multiple template points.

currently we can delete the constrains of point one at a time. This can become tedious process when there are lot of points of which both the constrains needs to be deleted.

Please add ability to select multiple points at once at delete both the constrains of these points at once.