Remove password_reset_any_verified_email FF

What does this MR do and why?

It removes password_reset_any_verified_email . The FF was enabled by default in !120971 (merged), no problems reported.

Screenshots or screen recordings

How to set up and validate locally

1. Go to your profile email settings (eg. http://localhost:3000/-/profile/emails) and check that besides a primary email you have at least one verified and one unverified email (root user from seed complies with this criteria)
2. Sign out and go to forgot your password page (eg. http://localhost:3000/users/password/new)
3. Enter the primary email and check you received an email (http://localhost:3000/rails/letter_opener)
   • Check the To email address is the same as the email you entered in the form
   • This worked already before this change
4. Enter one of the secondary verified emails and check you received an email
   • Check the To email address is the same as the email you entered in the form
   • This is a new functionality and should not work on master
5. Enter one of the secondary unverified emails and check if you received an email. You should not receive one

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #410038 (closed)