Revert "Upgrade to node 4.2"

This reverts commit 8bb12f4d996cdbd1c2f096ac82e464af231f7bfc.

services/clsi/.nvmrc

@@ -1 +0,0 @@
-4.2

services/clsi/package.json

@@ -19,7 +19,7 @@
     "sequelize": "^2.1.3",
     "wrench": "~1.5.4",
     "smoke-test-sharelatex": "git+https://github.com/sharelatex/smoke-test-sharelatex.git#v0.2.0",
-    "sqlite3": "~3.1.4",
+    "sqlite3": "~2.2.0",
     "express": "^4.2.0",
     "body-parser": "^1.2.0",
     "fs-extra": "^0.16.3",