Remove unused dependencies

- strong-error-handler
 - eslint

These dependencies were most likely added accidentally by fea3b781.

package.json

@@ -67,7 +67,6 @@
     "browserify": "^13.1.0",
     "chai": "^3.5.0",
     "es5-shim": "^4.1.0",
-    "eslint-config-loopback": "^1.0.0",
     "express-session": "^1.14.0",
     "grunt": "^1.0.1",
     "grunt-browserify": "^5.0.0",
@@ -94,7 +93,6 @@
     "phantomjs-prebuilt": "^2.1.7",
     "sinon": "^1.13.0",
     "sinon-chai": "^2.8.0",
-    "strong-error-handler": "^1.0.1",
     "strong-task-emitter": "^0.0.6",
     "supertest": "^2.0.0",
     "supertest-as-promised": "^4.0.2"