Remove cukes from travis build.
Remove cukes from travis build.

They are very slow and may have been the source of previous travis issues.
irfanah/vcr,chriswoodrich/vcr,intfrr/vcr,cemo/vcr,mcfiredrill/vcr,ihassin/vcr,ZmagoD/vcr,cemo/vcr,myronmarston/vcr,nishanbose/vcr,ZmagoD/vcr,chriswoodrich/vcr,allyapp/vcr,intfrr/vcr,ihassin/vcr,asymmetric/vcr,davidbebb/vcr,benjaminoakes/vcr,Shopify/vcr,irfanah/vcr,nishanbose/vcr,asymmetric/vcr,mcfiredrill/vcr,davidbebb/vcr,Shopify/vcr,myronmarston/vcr,allyapp/vcr