remove ember-router-service-refresh-polyfill

Author: mansona

packages/ember-inspector/package.json

@@ -94,7 +94,6 @@
     "ember-on-resize-modifier": "^1.1.0",
     "ember-qunit": "^8.1.1",
     "ember-resolver": "^13.1.0",
-    "ember-router-service-refresh-polyfill": "^1.1.0",
     "ember-showdown": "1.0.0-beta.1",
     "ember-sinon-qunit": "^7.5.0",
     "ember-source": "^5.0.0",