Remove old ruby from travis

lord · lord · commit a6794138ef71 · 2017-06-15T13:20:55.000-07:00
diff --git a/.travis.yml b/.travis.yml
@@ -3,7 +3,6 @@ sudo: false
 language: ruby
 
 rvm:
-  - 2.2.5
   - 2.3.3
   - 2.4.0
 

-Original file line number
+Diff line change
 language: ruby
 rvm:
 -  - 2.2.5
   - 2.3.3
   - 2.4.0