Selectively disabled cops for methods and classes

Rubocop now requires that cops are scoped tighter. This reformats it so
that only the specific method or class has the cop disabled.

lib/http/options.rb

@@ -1,14 +1,12 @@
 # frozen_string_literal: true
 
-# rubocop:disable Metrics/ClassLength
-
 require "http/headers"
 require "openssl"
 require "socket"
 require "http/uri"
 
 module HTTP
-  class Options
+  class Options # rubocop:disable Metrics/ClassLength
     @default_socket_class     = TCPSocket
     @default_ssl_socket_class = OpenSSL::SSL::SSLSocket
     @default_timeout_class    = HTTP::Timeout::Null

spec/support/black_hole.rb

@@ -2,11 +2,9 @@
 
 module BlackHole
   class << self
-    # rubocop:disable Style/MethodMissingSuper
-    def method_missing(*)
+    def method_missing(*) # rubocop:disable Style/MethodMissingSuper
       self
     end
-    # rubocop:enable Style/MethodMissingSuper
 
     def respond_to_missing?(*)
       true

spec/support/dummy_server/servlet.rb

@@ -174,4 +174,5 @@ def do_#{method.upcase}(req, res)
                  end
     end
   end
+  # rubocop:enable Metrics/ClassLength
 end