Fix rubocop complain

app/controllers/profiles/two_factor_auths_controller.rb

@@ -11,7 +11,6 @@ class Profiles::TwoFactorAuthsController < ApplicationController
   def create
     if current_user.valid_otp?(params[:pin_code])
       current_user.otp_required_for_login = true
-      #current_user.otp_secret = User.generate_otp_secret
       current_user.save!
 
       redirect_to profile_account_path

app/models/user.rb

@@ -58,7 +58,7 @@ require 'file_size_validator'
 
 class User < ActiveRecord::Base
   devise :two_factor_authenticatable,
-         :otp_secret_encryption_key => File.read(Rails.root.join('.secret')).chomp
+         otp_secret_encryption_key: File.read(Rails.root.join('.secret')).chomp
 
   include Sortable
   include Gitlab::ConfigHelper

config/initializers/devise.rb

@@ -2,7 +2,7 @@
 # four configuration values can also be set straight in your models.
 Devise.setup do |config|
   config.warden do |manager|
-    manager.default_strategies(:scope => :user).unshift :two_factor_authenticatable
+    manager.default_strategies(scope: :user).unshift :two_factor_authenticatable
   end
 
   # ==> Mailer Configuration