add encrypted user configs controller

app/controllers/encrypted_user_configs_controller.rb

@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class EncryptedUserConfigsController < ApplicationController
+  load_and_authorize_resource :encrypted_user_config
+
+  def destroy
+    @encrypted_user_config.destroy!
+
+    redirect_back(fallback_location: root_path)
+  end
+end