Ruby » Ruby master

parse.y: no named capture conflict warnings

• parse.y (reg_named_capture_assign_iter): remove named capture
  conflict warnings. it is just annoying rather than useful.
  [ruby-core:75416] [Bug #12359]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55396 b2dd03c8-39d4-4d8f-98ff-823fe69b080e