[native][web] Remove UI elements that ask for password when deleting account

Summary:
We stopped taking the password as input in D9236, so there's no point in asking for it anymore.

Depends on D9424

Test Plan: Test account deletion components and make sure they still work

Reviewers: varun, atul, ginsu

Reviewed By: ginsu

Subscribers: tomek, wyilio

Differential Revision: https://phab.comm.dev/D9425