Travis: do not run on 1.9.3 anymore.
Travis: do not run on 1.9.3 anymore.

* It is theoritaclly possible to make it work but it would be a lot of efforts.

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