[Settings] Ungate, and remove old settings (#6144)

* move export car dialog

* move disableemail2fadialog

* delete old settings screens

* fix type error

* Update Navigation.tsx

* Delete AccountDropdownBtn.tsx

* remove old change handle modal

* delete add app paswords

* forgot to actually delete the change handle modal

src/state/modals/index.tsx

@@ -48,11 +48,6 @@ export interface DeleteAccountModal {
   name: 'delete-account'
 }
 
-export interface ChangeHandleModal {
-  name: 'change-handle'
-  onChanged: () => void
-}
-
 export interface WaitlistModal {
   name: 'waitlist'
 }
@@ -61,10 +56,6 @@ export interface InviteCodesModal {
   name: 'invite-codes'
 }
 
-export interface AddAppPasswordModal {
-  name: 'add-app-password'
-}
-
 export interface ContentLanguagesSettingsModal {
   name: 'content-languages-settings'
 }
@@ -101,8 +92,6 @@ export interface InAppBrowserConsentModal {
 
 export type Modal =
   // Account
-  | AddAppPasswordModal
-  | ChangeHandleModal
   | DeleteAccountModal
   | VerifyEmailModal
   | ChangeEmailModal