I know that throughout the last couple of decades - both in my area and around the country - roundabouts have become a lot more common (sometimes a little too common, in my opinion). That made me wonder: do you know of any intersections where a roundabout was removed?
Anyway, I can't really think of any examples of roundabouts being taken out and reverted to stop sign or traffic light intersections, but I'm sure they must be out there somewhere.
I expected the OP to be somebody else. You sure your name isn't tradephoric?

At any rate, one example that comes to mind for me is on 11400 South in South Jordan, Utah at its intersections with River Heights Dr and Summer Heights Dr. When 11400 South was widened through the area in the late 2000s, those two intersections were more or less combined to form what amounted to one huge roundabout. Here is a Google Earth image from 2010:

In the late 2010s, they got rid of the roundabout and converted it to two signalized intersections. That was done at the same time as the Bangerter Highway intersection just to the west was upgraded to a SPUI. Google Earth from 2019:
