Remove unused dependencies

package.json

@@ -41,20 +41,13 @@
   },
   "devDependencies": {
     "@ember/optional-features": "^0.7.0",
-    "broccoli-asset-rev": "^3.0.0",
-    "ember-ajax": "^3.1.0",
     "ember-cli": "~3.5.0",
     "ember-cli-dependency-checker": "^3.0.0",
     "ember-cli-eslint": "^4.2.3",
     "ember-cli-htmlbars": "^3.0.0",
     "ember-cli-htmlbars-inline-precompile": "^1.0.3",
     "ember-cli-inject-live-reload": "^2.0.1",
-    "ember-cli-sri": "^2.1.1",
-    "ember-cli-template-lint": "^1.0.0-beta.1",
-    "ember-cli-uglify": "^2.1.0",
-    "ember-data": "^2.17.0",
     "ember-disable-prototype-extensions": "^1.1.3",
-    "ember-export-application-global": "^2.0.0",
     "ember-maybe-import-regenerator": "^0.1.6",
     "ember-qunit": "^4.1.2",
     "ember-resolver": "^5.0.1",
@@ -64,8 +57,7 @@
     "eslint-plugin-ember": "^5.2.0",
     "eslint-plugin-node": "^8.0.0",
     "lerna-changelog": "^0.8.2",
-    "loader.js": "^4.7.0",
-    "qunit-dom": "^0.8.0"
+    "loader.js": "^4.7.0"
   },
   "ember-addon": {
     "configPath": "tests/dummy/config"