e2mmap.rb: remove legacy code
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56115 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
e2mmap.rb: remove legacy code
remove legacy code. Symbol is no longer a number already.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56115 b2dd03c8-39d4-4d8f-98ff-823fe69b080e