added my password to my username in outlook

Had a senior moment and put my password on the end of my username after the hotmail.com,this is now shown as one of two alternatives when I log into my account,of course it is not a proper account and out look does not have it as a alias,but it seems impossible to delete it when it appears as I sign in, all I want to do is remove it .it will not go by clicking on it and then hitting delete button or shift delete it still appears I cannot be the only person who has done this maybe somebody could try it and find a way of removing it,just type in your outlook/hotmail address and then put something else after hotmail and hit enter this will be included in the auto addresses that drop down when you hit the first letter of your address.