How do I delete the suggested/ previously used email addresses in the drop down

[AC Question]

When ever I want to sign into or sign up for something I have all of the previous email address I have used come up in the drop down and want this to stop is there any way I can stop this or delete this. Without doing a factory reset

 

[Rukbat]

Yes, but not the way you want (you have to rewrite the app).