Merge pull request solidusio#140 from jacobherrington/patch-3

Remove 2.2 from CI (EOL)

Author: kennyadsl

.travis.yml

@@ -9,14 +9,12 @@ rvm:
   - 2.5
 env:
   matrix:
-    - SOLIDUS_BRANCH=v2.2 DB=postgres
     - SOLIDUS_BRANCH=v2.3 DB=postgres
     - SOLIDUS_BRANCH=v2.4 DB=postgres
     - SOLIDUS_BRANCH=v2.5 DB=postgres
     - SOLIDUS_BRANCH=v2.6 DB=postgres
     - SOLIDUS_BRANCH=v2.7 DB=postgres
     - SOLIDUS_BRANCH=master DB=postgres
-    - SOLIDUS_BRANCH=v2.2 DB=mysql
     - SOLIDUS_BRANCH=v2.3 DB=mysql
     - SOLIDUS_BRANCH=v2.4 DB=mysql
     - SOLIDUS_BRANCH=v2.5 DB=mysql