Remove utf8_inspect method.

Library/Homebrew/cask/lib/hbc/download_strategy.rb

@@ -100,7 +100,7 @@ module Hbc
     end
 
     def _fetch
-      odebug "Calling curl with args #{cask_curl_args.utf8_inspect}"
+      odebug "Calling curl with args #{cask_curl_args}"
       curl(*cask_curl_args)
     end
 

Library/Homebrew/cask/lib/hbc/system_command.rb

@@ -20,7 +20,7 @@ module Hbc
 
     def run!
       @processed_output = { stdout: "", stderr: "" }
-      odebug "Executing: #{expanded_command.utf8_inspect}"
+      odebug "Executing: #{expanded_command}"
 
       each_output_line do |type, line|
         case type
@@ -62,7 +62,7 @@ module Hbc
 
     def assert_success
       return if processed_status && processed_status.success?
-      raise CaskCommandFailedError.new(command.utf8_inspect, processed_output[:stdout], processed_output[:stderr], processed_status)
+      raise CaskCommandFailedError.new(command, processed_output[:stdout], processed_output[:stderr], processed_status)
     end
 
     def expanded_command
@@ -162,7 +162,7 @@ module Hbc
           raise CaskError, <<-EOS
     Empty result parsing plist output from command.
       command was:
-      #{command.utf8_inspect}
+      #{command}
       output we attempted to parse:
       #{output}
           EOS

Library/Homebrew/cask/lib/hbc/url_checker.rb

@@ -38,7 +38,7 @@ module Hbc
     def _check_response_status
       ok = OK_RESPONSES[cask.url.scheme]
       return if ok.include?(@response_status)
-      add_error "unexpected http response, expecting #{ok.map(&:utf8_inspect).join(" or ")}, got #{@response_status.utf8_inspect}"
+      add_error "unexpected http response, expecting #{ok.map(&:to_s).join(" or ")}, got #{@response_status}"
     end
 
     def _get_data_from_request

Library/Homebrew/cask/lib/hbc/utils.rb

@@ -4,15 +4,6 @@ require "stringio"
 
 BUG_REPORTS_URL = "https://github.com/caskroom/homebrew-cask#reporting-bugs".freeze
 
-# monkeypatch Object - not a great idea
-class Object
-  def utf8_inspect
-    return inspect unless defined?(Encoding)
-    return map(&:utf8_inspect) if respond_to?(:map)
-    inspect.force_encoding("UTF-8").sub(/\A"(.*)"\Z/, '\1')
-  end
-end
-
 class Buffer < StringIO
   extend Predicable