Drop support for Node v6

FND · web-flow · commit 980f2b4f30de · 2019-05-02T08:04:14.000+02:00
cf. faucet-pipeline/faucet-pipeline-core@62e55ff
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,5 @@
 language: node_js
 node_js:
-- 6
 - 8
 - 10
 

-Original file line number
+Diff line change
@@ @@ -1,6 +1,5 @@ @@
 language: node_js
 node_js:
 -- 6
 - 8
 - 10