* lib/cgi/html.rb: fix indent. delete unnecessary code.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40244 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* lib/cgi/html.rb: remove 'super {yield}' which is for old version.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40245 b2dd03c8-39d4-4d8f-98ff-823fe69b080e