Drop Ruby 2.2 from test because of EOL

aycabta · aycabta · commit 724e438b0752 · 2019-01-04T14:41:48.000+09:00
diff --git a/appveyor.yml b/appveyor.yml
@@ -25,8 +25,6 @@ deploy: off
 environment:
   NOBENCHMARK: 1
   matrix:
-    - ruby_version: 22
-    - ruby_version: 22-x64
     - ruby_version: 23
     - ruby_version: 23-x64
     - ruby_version: 24
