fix rubocop errors

lib/omniauth/auth_hash.rb

@@ -40,7 +40,7 @@ module OmniAuth
       end
 
       def name?
-        !!name # rubocop:disable DoubleNegation
+        !!name
       end
       alias_method :valid?, :name?
 

lib/omniauth/form.rb

@@ -1,5 +1,5 @@
 module OmniAuth
-  class Form # rubocop:disable ClassLength
+  class Form
     DEFAULT_CSS = File.read(File.expand_path('../form.css', __FILE__))
 
     attr_accessor :options

spec/omniauth/strategy_spec.rb

@@ -607,7 +607,7 @@ describe OmniAuth::Strategy do
 
       it 'responds with a provider-specific hash if one is set' do
         OmniAuth.config.mock_auth[:test] = {
-          'uid' => 'abc',
+          'uid' => 'abc'
         }
 
         strategy.call make_env('/auth/test/callback')