Removing testing for ruby-head for now.
Removing testing for ruby-head for now.

gregoryjscott/transitmix,gregoryjscott/transitmix,mudpuddle/transitmix,boonrs/transitmix,tannerhodges/transitmix,mudpuddle/transitmix,gregoryjscott/transitmix,boonrs/transitmix,tannerhodges/transitmix,mudpuddle/transitmix,tannerhodges/transitmix,boonrs/transitmix