Ruby

unicode_normalize/normalize.rb: remove unnecessary module names

• lib/unicode_normalize/normalize.rb (UnicodeNormalize): use self
  instead of module name and remove module name if unnecessary.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48044 b2dd03c8-39d4-4d8f-98ff-823fe69b080e