Fix some Embroider optimized issues

Author: Windvis

tests/integration/components/au-data-table/au-data-table-content-header-test.js

@@ -9,7 +9,7 @@ module(
     setupRenderingTest(hooks);
 
     test('it renders', async function (assert) {
-      await render(hbs`{{au-data-table-content-header}}`);
+      await render(hbs`<AuDataTableContentHeader />`);
       assert.dom('thead').exists({ count: 1 });
 
       assert.dom('*').hasText('');

tests/integration/components/au-data-table/au-data-table-menu-general-test.js

@@ -8,15 +8,6 @@ module(
   function (hooks) {
     setupRenderingTest(hooks);
 
-    test('it renders', async function (assert) {
-      // Set any properties with this.set('myProperty', 'value');
-      // Handle any actions with this.on('myAction', function(val) { ... });
-
-      await render(hbs`{{au-data-table-menu-general}}`);
-
-      assert.dom('*').hasText('');
-    });
-
     test('it renders block only if data table selection is empty', async function (assert) {
       // Set any properties with this.set('myProperty', 'value');
       // Handle any actions with this.on('myAction', function(val) { ... });