test: remove tests on Node.js 6

Node.js 6 has reached end-of-life at 2019-04-30 so there's little use of supporting this for future releases of uuid, see https://github.com/nodejs/Release#end-of-life-releases
uuidjs · Oct 13, 2019 · edf430a · edf430a
1 parent b9fd85b
commit edf430a
Showing 1 changed file with 0 additions and 1 deletion.
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,4 @@
 language: node_js
 node_js:
-    - "6"
     - "8"
     - "10"