Remove ember-data

Author: NullVoxPopuli

package.json

@@ -67,7 +67,6 @@
     "ember-cli-htmlbars": "6.3.0",
     "ember-cli-inject-live-reload": "2.1.0",
     "ember-concurrency": "^4.0.4",
-    "ember-data": "5.6.0",
     "ember-eslint": "0.5.0",
     "ember-load-initializers": "2.1.2",
     "ember-qunit": "8.1.1",