Remove distro limit as it doesn't support PHP8.

jameswilddev · jameswilddev · commit 9217484782a9 · 2021-04-20T10:45:44.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,4 @@
 language: php
-dist: trusty
 php:
   - '7.1'
   - '7.2'
