node.h: Remove a not used macro
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59943 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
node.h: Remove a not used macro
introduced on r49894. But this macro has not been
used since r49897.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59943 b2dd03c8-39d4-4d8f-98ff-823fe69b080e