You can delete auto fill by deleting the browser's history. All this is stored inside the browser's window, You can delete the data and then auto fill fill be deleted.
Select all the items you want to delete in iTunes and hit the delete key.
You have to delete each address manually. You cannot delete all by one click. You have to login in each and then delete.
1719 the collegeway
In order to enable Autofill on their browser, a person can download a third-party autofill tool from a variety of websites. One particular autofill tool is called "Dashlane", which can be downloaded and applied to any browser of choice.
You put your curser over the email you want to delete and press the delete button on your keyboard.
highlight it then press delete
just leave them eventually they will delete themselves
You have to delete the cookie for that particular website from your internet browser preferences.
There will not be a way to delete the accounts unless you have the email addresses for them.
Autocomplete
Clear your cookies.
As of version 6.0, Google Chrome has a built-in AutoFill feature, found under Options > Personal Stuff > AutoFill