travis: only build ruby-head

We use GitHub Actions for the rest, particularly giving us a boost in macOS builds. Building ruby-head is for the moment more convenient here.
libgit2 · Aug 16, 2019 · 74e1569 · 74e1569
1 parent 94d18f4
commit 74e1569
Showing 1 changed file with 0 additions and 5 deletions.
diff --git a/.travis.yml b/.travis.yml
@@ -6,12 +6,7 @@ os:
   - osx
 
 rvm:
-  - 2.3.3
-  - 2.4.0
-  - 2.5.0
-  - 2.6
   - ruby-head
-  - rbx-2
 
 addons:
   apt: