The option you are looking for is "uninstall work profile", not "remove account". If you use the search bar in your settings menu then it should come up.

I just did it and it worked perfectly. I had the same problem as you do. I will try to add a screenshot to demonstrate.

[![screenshot][1]][1f]

  [1]: https://i.sstatic.net/rybril.jpg
  [1f]: https://i.sstatic.net/rybri.jpg