Remove sign-in token authentication, instead send e-mail about new sign-in (#17970)

app/controllers/auth/sessions_controller.rb

@@ -8,7 +8,6 @@ class Auth::SessionsController < Devise::SessionsController
   skip_before_action :update_user_sign_in
 
   include TwoFactorAuthenticationConcern
-  include SignInTokenAuthenticationConcern
 
   before_action :set_instance_presenter, only: [:new]
   before_action :set_body_classes
@@ -66,7 +65,7 @@ class Auth::SessionsController < Devise::SessionsController
   end
 
   def user_params
-    params.require(:user).permit(:email, :password, :otp_attempt, :sign_in_token_attempt, credential: {})
+    params.require(:user).permit(:email, :password, :otp_attempt, credential: {})
   end
 
   def after_sign_in_path_for(resource)
@@ -142,6 +141,12 @@ class Auth::SessionsController < Devise::SessionsController
       ip: request.remote_ip,
       user_agent: request.user_agent
     )
+
+    UserMailer.suspicious_sign_in(user, request.remote_ip, request.user_agent, Time.now.utc).deliver_later! if suspicious_sign_in?(user)
+  end
+
+  def suspicious_sign_in?(user)
+    SuspiciousSignInDetector.new(user).suspicious?(request)
   end
 
   def on_authentication_failure(user, security_measure, failure_reason)