Remove Ruby 1.8.7 from CI matrix
Remove Ruby 1.8.7 from CI matrix

Br3nda/alaveteli,Br3nda/alaveteli,nzherald/alaveteli,andreicristianpetcu/alaveteli,andreicristianpetcu/alaveteli_old,andreicristianpetcu/alaveteli_old,andreicristianpetcu/alaveteli,andreicristianpetcu/alaveteli_old,nzherald/alaveteli,Br3nda/alaveteli,nzherald/alaveteli,andreicristianpetcu/alaveteli,Br3nda/alaveteli,nzherald/alaveteli,Br3nda/alaveteli,andreicristianpetcu/alaveteli_old,andreicristianpetcu/alaveteli_old,andreicristianpetcu/alaveteli,nzherald/alaveteli,andreicristianpetcu/alaveteli