Removed ruby_version_is from built-in constants specs.
Removed ruby_version_is from built-in constants specs.

ruby/spec,nobu/rubyspec,eregon/rubyspec,yaauie/rubyspec,sgarciac/spec,iliabylich/rubyspec,jannishuebl/rubyspec,sgarciac/spec,chesterbr/rubyspec,Aesthetikx/rubyspec,sgarciac/spec,kachick/rubyspec,Aesthetikx/rubyspec,chesterbr/rubyspec,nobu/rubyspec,eregon/rubyspec,nobu/rubyspec,kachick/rubyspec,benlovell/rubyspec,lucaspinto/rubyspec,BanzaiMan/rubyspec,wied03/rubyspec,yous/rubyspec,askl56/rubyspec,yaauie/rubyspec,lucaspinto/rubyspec,yous/rubyspec,askl56/rubyspec,ruby/spec,iliabylich/rubyspec,eregon/rubyspec,wied03/rubyspec,kachick/rubyspec,ruby/rubyspec,jannishuebl/rubyspec,kidaa/rubyspec,ruby/rubyspec,kidaa/rubyspec,ruby/spec,bl4ckdu5t/rubyspec,BanzaiMan/rubyspec,wied03/rubyspec,benlovell/rubyspec,bl4ckdu5t/rubyspec