remove overrides form smoke test ember-try config

Author: mansona

smoke-test-app/tests/dummy/config/ember-try.js

@@ -30,9 +30,6 @@ module.exports = async function () {
           devDependencies: {
             'ember-source': await getChannelURL('release'),
           },
-          overrides: {
-            'ember-source': '$ember-source',
-          },
         },
       },
       {
@@ -41,9 +38,6 @@ module.exports = async function () {
           devDependencies: {
             'ember-source': await getChannelURL('beta'),
           },
-          overrides: {
-            'ember-source': '$ember-source',
-          },
         },
       },
       {
@@ -52,9 +46,6 @@ module.exports = async function () {
           devDependencies: {
             'ember-source': await getChannelURL('canary'),
           },
-          overrides: {
-            'ember-source': '$ember-source',
-          },
         },
       },
       {