Remove redundant registrations

These are already handled in `buildOwner()`

Author: chancancode

packages/ember-glimmer/tests/integration/helpers/input-test.js

@@ -1,17 +1,10 @@
 import { assign } from 'ember-utils';
 import { set } from 'ember-metal';
-import { TextField, Checkbox, Component } from '../../utils/helpers';
+import { Component } from '../../utils/helpers';
 import { RenderingTest, moduleFor } from '../../utils/test-case';
 import { runDestroy } from 'internal-test-helpers';
 
 class InputRenderingTest extends RenderingTest {
-  constructor() {
-    super();
-
-    this.registerComponent('-text-field', { ComponentClass: TextField });
-    this.registerComponent('-checkbox', { ComponentClass: Checkbox });
-  }
-
   $input() {
     return this.$('input');
   }

packages/ember-glimmer/tests/integration/helpers/text-area-test.js

@@ -1,17 +1,10 @@
 import { assign } from 'ember-utils';
 import { set } from 'ember-metal';
-import { TextArea } from '../../utils/helpers';
 import { RenderingTest, moduleFor } from '../../utils/test-case';
 import { classes } from '../../utils/test-helpers';
 import { applyMixins } from '../../utils/abstract-test-case';
 
 class TextAreaRenderingTest extends RenderingTest {
-  constructor() {
-    super();
-
-    this.registerComponent('-text-area', { ComponentClass: TextArea });
-  }
-
   assertTextArea({ attrs, value } = {}) {
     let mergedAttrs = assign({ 'class': classes('ember-view ember-text-area') }, attrs);
     this.assertComponentElement(this.firstChild, { tagName: 'textarea', attrs: mergedAttrs });

packages/ember-glimmer/tests/utils/helpers.js

@@ -8,9 +8,7 @@ export {
   Helper,
   helper,
   Component,
-  TextArea,
   LinkComponent,
-  TextField,
   InteractiveRender,
   InertRenderer,
   htmlSafe,