travis: test only latest stable release of Go and tip

mewmew · mewmew · commit d8570f07861a · 2018-11-30T08:48:42.000+01:00
Former-commit-id: d843857
diff --git a/.travis.yml b/.travis.yml
@@ -1,7 +1,6 @@
 language: go
 
 go:
-  - "1.10"
   - "1.11"
   - tip
 

-Original file line number
+Diff line change
@@ @@ -1,7 +1,6 @@ @@
 language: go
 go:
 -  - "1.10"
   - "1.11"
   - tip