don't test against Ruby 2.1
don't test against Ruby 2.1

doing so just slows down our test suite. Ruby 2.1 and 2.2 aren’t
sufficiently different that it’s worth running the tests against both

iuriandreazza/activeadmin,SoftSwiss/active_admin,maysam/activeadmin,iuriandreazza/activeadmin,varyonic/activeadmin,mrjman/activeadmin,wspurgin/activeadmin,vytenis-s/activeadmin,activeadmin/activeadmin,siutin/activeadmin,quikly/active_admin,halilim/activeadmin,waymondo/active_admin,Ibotta/activeadmin,quikly/active_admin,vraravam/activeadmin,mateusg/active_admin,cmunozgar/activeadmin,maysam/activeadmin,mateusg/active_admin,waymondo/active_admin,senid231/activeadmin,halilim/activeadmin,activeadmin/activeadmin,gogovan/activeadmin,whatcould/active_admin,javierjulio/activeadmin,cmunozgar/activeadmin,vraravam/activeadmin,SoftSwiss/active_admin,javierjulio/activeadmin,wspurgin/activeadmin,halilim/activeadmin,deivid-rodriguez/activeadmin,activeadmin/activeadmin,chdem/activeadmin,gogovan/activeadmin,vraravam/activeadmin,Ibotta/activeadmin,iuriandreazza/activeadmin,mauriciopasquier/active_admin,siutin/activeadmin,SoftSwiss/active_admin,javierjulio/activeadmin,gogovan/activeadmin,mrjman/activeadmin,mauriciopasquier/active_admin,quikly/active_admin,chdem/activeadmin,bolshakov/activeadmin,varyonic/activeadmin,bolshakov/activeadmin,waymondo/active_admin,deivid-rodriguez/activeadmin,deivid-rodriguez/activeadmin,bolshakov/activeadmin,iuriandreazza/activeadmin,mauriciopasquier/active_admin,iuriandreazza/activeadmin,vytenis-s/activeadmin,iuriandreazza/activeadmin,mateusg/active_admin,iuriandreazza/activeadmin,senid231/activeadmin,mrjman/activeadmin,siutin/activeadmin,vytenis-s/activeadmin,whatcould/active_admin,wspurgin/activeadmin,senid231/activeadmin,maysam/activeadmin,chdem/activeadmin,Ibotta/activeadmin,varyonic/activeadmin,cmunozgar/activeadmin,whatcould/active_admin