Remove unused dependencies

Author: Ruben Bridgewater

package.json

@@ -17,15 +17,13 @@
   },
   "devDependencies": {
     "async": "^1.3.0",
-    "colors": "~0.6.0-1",
     "coveralls": "^2.11.2",
     "hiredis": "^0.4.1",
     "jshint": "^2.8.0",
     "metrics": ">=0.1.5",
     "mocha": "^2.2.5",
     "nyc": "^3.0.0",
     "tcp-port-used": "^0.1.2",
-    "underscore": "~1.4.4",
     "uuid": "^2.0.1"
   },
   "repository": {