Remove Fixture Adapter

packages/ember-data/lib/main.js

@@ -57,7 +57,6 @@ import {
 import ManyArray from "ember-data/system/many-array";
 import RecordArrayManager from "ember-data/system/record-array-manager";
 import {
-  FixtureAdapter,
   JSONAPIAdapter,
   RESTAdapter
 } from "ember-data/adapters";
@@ -153,23 +152,6 @@ Object.defineProperty(DS, 'normalizeModelName', {
   value: normalizeModelName
 });
 
-var _FixtureAdapter = FixtureAdapter;
-
-Object.defineProperty(DS, 'FixtureAdapter', {
-  get: function() {
-    if (_FixtureAdapter === FixtureAdapter) {
-      Ember.deprecate('DS.FixtureAdapter has been deprecated and moved into an unsupported addon: https://github.com/emberjs/ember-data-fixture-adapter/tree/master', false, {
-        id: 'ds.adapter.fixture-adapter-deprecated',
-        until: '2.0.0'
-      });
-    }
-    return _FixtureAdapter;
-  },
-  set:  function(FixtureAdapter) {
-    _FixtureAdapter = FixtureAdapter;
-  }
-});
-
 Ember.lookup.DS = DS;
 
 export default DS;