Ability to Delete User Accounts

Lisa Colgan, from Ashford University, has suggested the following:

s there any way to remove a name from the list of instructors/students that was inadvertently entered? When uploading the csv occasionally a wrong entry is made and no indication is given that that first and last name is already part of the directory. For example, I upload many different instructors per start. I mistakenly put two different names together in the user ID and it added this to the administrator directory list. Marjorie Estivill was added as au.is.mpetersen although she was already in there as au.is.mestivill. I have disabled this but since her first and last names are already in there I cannot correct the wrong entry and just have to list "do not use". In the past I had misspelled her name (adding an "e") and the same problem occurred, I could not delete the entry. Now there are several Marjorie Estivill's in there to choose unfortunately and causes confusion. It would be helpful to be able to remove these or once "disabled" they would disappear from the list. Thanks!