Revert "chruby also supports dash!"
Revert "chruby also supports dash!"

This reverts commit 8051a66a9ef2e504a935b4cadb6f4ef592ac6178.

* We cannot support dash, since it has no support for Arrays.

postmodern/chruby,eunomie/chgo,eunomie/chgo,JeanMertz/chruby-fish,regularfry/chruby,ngpestelos/chruby,rstacruz/chruby-fish,postmodern/chruby,ilikepi/chruby,regularfry/chruby,ngpestelos/chruby,kbrock/chruby,JeanMertz/chruby-fish,kbrock/chruby,ilikepi/chruby,rstacruz/chruby-fish