Configuring preferences and options in Outlook.com
@Amber Smith said
would like to remove the email option all together
Are you running into the same problem described in this post - It won't let you remove the only "Email a code" method without replacing it with a new "Email a code"?
https://learn.microsoft.com/en-us/answers/questions/5980693/why-doesnt-the-system-allow-to-remove-my-email-a-c
If so, it's a know bug and there is no fix or workaround at this time.