Remove jruby-19mode from allowed failures in tarvis.yml.
Remove jruby-19mode from allowed failures in tarvis.yml.

Altonymous/sidetiq,slategroup/sidetiq,vayu-technology/sidetiq,grzlus/sidetiq,danilogcarolino/sidetiq,talentpad/sidetiq,kickserv/sidetiq,sfroehler/sidetiq,vayu-technology/sidetiq,talentpad/sidetiq,rjocoleman/sidetiq,b1tw1se/sidetiq,PaulMest/sidetiq,tomoyuki-yanagisawa/sidetiq-mod,PaulMest/sidetiq,flowerett/sidetiq,akhiln/sidetiq,brennovich/sidetiq,atpay/sidetiq,grzlus/sidetiq,tomoyuki-yanagisawa/sidetiq-mod,atpay/sidetiq,akhiln/sidetiq,danilogcarolino/sidetiq,endofunky/sidetiq,stanchan/sidetiq,endofunky/sidetiq,flowerett/sidetiq,stanchan/sidetiq,tobiassvn/sidetiq,kickserv/sidetiq,tobiassvn/sidetiq,brennovich/sidetiq,slategroup/sidetiq,sfroehler/sidetiq,rjocoleman/sidetiq,b1tw1se/sidetiq