Remove JRuby and Rubinius from the travis matrix
Remove JRuby and Rubinius from the travis matrix

This will save Travis some precious resource since it will not need to
run 18 jobs for these Ruby implementations on every push or pull
request.

We do care about these implementations but we should fix the build
locally before having it running on travis. We would love to have
someone working on this but right now it is not our reality.

hanystudy/rails,Edouard-chin/rails,tjschuck/rails,joonyou/rails,coreyward/rails,elfassy/rails,untidy-hair/rails,kirs/rails-1,elfassy/rails,kaspth/rails,marklocklear/rails,samphilipd/rails,illacceptanything/illacceptanything,rafaelfranca/omg-rails,sealocal/rails,yalab/rails,notapatch/rails,kirs/rails-1,stefanmb/rails,mohitnatoo/rails,deraru/rails,lcreid/rails,betesh/rails,kmayer/rails,sergey-alekseev/rails,Sen-Zhang/rails,MSP-Greg/rails,Envek/rails,odedniv/rails,arunagw/rails,kamipo/rails,bolek/rails,gavingmiller/rails,bogdanvlviv/rails,palkan/rails,matrinox/rails,mtsmfm/railstest,Spin42/rails,EmmaB/rails-1,aditya-kapoor/rails,jeremy/rails,gfvcastro/rails,iainbeeston/rails,repinel/rails,lcreid/rails,felipecvo/rails,stefanmb/rails,tgxworld/rails,bogdanvlviv/rails,gcourtemanche/rails,baerjam/rails,flanger001/rails,MichaelSp/rails,assain/rails,yahonda/rails,fabianoleittes/rails,palkan/rails,kaspth/rails,kddeisz/rails,repinel/rails,kaspth/rails,illacceptanything/illacceptanything,utilum/rails,tjschuck/rails,Stellenticket/rails,deraru/rails,yasslab/railsguides.jp,arunagw/rails,untidy-hair/rails,pschambacher/rails,felipecvo/rails,Sen-Zhang/rails,utilum/rails,Vasfed/rails,Envek/rails,kddeisz/rails,mathieujobin/reduced-rails-for-travis,tjschuck/rails,mijoharas/rails,yalab/rails,Spin42/rails,georgeclaghorn/rails,vipulnsward/rails,alecspopa/rails,mechanicles/rails,MichaelSp/rails,Stellenticket/rails,voray/rails,untidy-hair/rails,brchristian/rails,xlymian/rails,travisofthenorth/rails,kamipo/rails,untidy-hair/rails,aditya-kapoor/rails,Envek/rails,yhirano55/rails,shioyama/rails,bolek/rails,prathamesh-sonpatki/rails,odedniv/rails,notapatch/rails,tijwelch/rails,yalab/rails,lucasmazza/rails,bradleypriest/rails,illacceptanything/illacceptanything,richseviora/rails,vipulnsward/rails,Spin42/rails,yasslab/railsguides.jp,prathamesh-sonpatki/rails,shioyama/rails,pvalena/rails,travisofthenorth/rails,jeremy/rails,utilum/rails,vipulnsward/rails,travisofthenorth/rails,illacceptanything/illacceptanything,baerjam/rails,riseshia/railsguides.kr,tgxworld/rails,voray/rails,yalab/rails,kmcphillips/rails,Erol/rails,yhirano55/rails,arjes/rails,repinel/rails,gfvcastro/rails,gfvcastro/rails,iainbeeston/rails,Sen-Zhang/rails,ledestin/rails,deraru/rails,elfassy/rails,esparta/rails,flanger001/rails,bradleypriest/rails,Vasfed/rails,hanystudy/rails,palkan/rails,Envek/rails,kddeisz/rails,rafaelfranca/omg-rails,yasslab/railsguides.jp,koic/rails,gcourtemanche/rails,betesh/rails,lucasmazza/rails,maicher/rails,rossta/rails,illacceptanything/illacceptanything,flanger001/rails,baerjam/rails,pvalena/rails,bogdanvlviv/rails,flanger001/rails,aditya-kapoor/rails,bradleypriest/rails,illacceptanything/illacceptanything,kachick/rails,rails/rails,mohitnatoo/rails,koic/rails,repinel/rails,joonyou/rails,betesh/rails,xlymian/rails,kmcphillips/rails,riseshia/railsguides.kr,matrinox/rails,BlakeWilliams/rails,arunagw/rails,printercu/rails,illacceptanything/illacceptanything,BlakeWilliams/rails,tjschuck/rails,sergey-alekseev/rails,illacceptanything/illacceptanything,kmayer/rails,sealocal/rails,88rabbit/newRails,travisofthenorth/rails,eileencodes/rails,lcreid/rails,illacceptanything/illacceptanything,kenta-s/rails,mijoharas/rails,yawboakye/rails,mohitnatoo/rails,kenta-s/rails,pschambacher/rails,maicher/rails,yasslab/railsguides.jp,gauravtiwari/rails,rbhitchcock/rails,Erol/rails,starknx/rails,marklocklear/rails,yahonda/rails,kddeisz/rails,iainbeeston/rails,arjes/rails,mechanicles/rails,pschambacher/rails,tgxworld/rails,esparta/rails,georgeclaghorn/rails,jeremy/rails,mtsmfm/railstest,mtsmfm/rails,sealocal/rails,illacceptanything/illacceptanything,rossta/rails,gcourtemanche/rails,arunagw/rails,odedniv/rails,printercu/rails,brchristian/rails,ttanimichi/rails,gfvcastro/rails,vipulnsward/rails,mijoharas/rails,fabianoleittes/rails,Erol/rails,yhirano55/rails,voray/rails,MSP-Greg/rails,fabianoleittes/rails,prathamesh-sonpatki/rails,BlakeWilliams/rails,kenta-s/rails,samphilipd/rails,EmmaB/rails-1,mechanicles/rails,tijwelch/rails,schuetzm/rails,MSP-Greg/rails,aditya-kapoor/rails,ngpestelos/rails,pvalena/rails,amoody2108/TechForJustice,lcreid/rails,illacceptanything/illacceptanything,maicher/rails,gavingmiller/rails,schuetzm/rails,jeremy/rails,Vasfed/rails,rossta/rails,printercu/rails,richseviora/rails,kirs/rails-1,arjes/rails,vassilevsky/rails,sergey-alekseev/rails,prathamesh-sonpatki/rails,assain/rails,joonyou/rails,88rabbit/newRails,mtsmfm/railstest,schuetzm/rails,ledestin/rails,mathieujobin/reduced-rails-for-travis,deraru/rails,tijwelch/rails,mathieujobin/reduced-rails-for-travis,notapatch/rails,xlymian/rails,yahonda/rails,rbhitchcock/rails,gauravtiwari/rails,Stellenticket/rails,bogdanvlviv/rails,kamipo/rails,koic/rails,yawboakye/rails,mechanicles/rails,georgeclaghorn/rails,vassilevsky/rails,printercu/rails,brchristian/rails,rbhitchcock/rails,assain/rails,yhirano55/rails,riseshia/railsguides.kr,marklocklear/rails,ttanimichi/rails,samphilipd/rails,Stellenticket/rails,bolek/rails,k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