* lib/prettyprint.rb: removed PrettyPrint#first?
  because it is obsoleted method since Ruby 1.8.2

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47243 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2014-08-22

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47244 b2dd03c8-39d4-4d8f-98ff-823fe69b080e