fix: [AA-1018] api cleanup

couple of minor fixes from reviews

src/courseware/data/__factories__/courseMetadata.factory.js

@@ -39,14 +39,6 @@ Factory.define('courseMetadata')
     },
     show_calculator: false,
     license: 'all-rights-reserved',
-    course_access: {
-      has_access: true,
-      user_fragment: null,
-      developer_message: null,
-      user_message: null,
-      error_code: null,
-      additional_context_user_message: null,
-    },
     notes: {
       visible: true,
       enabled: false,

src/tab-page/LoadedTabPage.test.jsx

@@ -24,7 +24,7 @@ describe('Loaded Tab Page', () => {
   });
 
   it('shows Instructor Toolbar if original user is staff', async () => {
-    const courseMetadata = Factory.build('courseMetadata', { original_user_is_staff: true });
+    const courseMetadata = Factory.build('courseMetadata');
     const courseHomeMetadata = Factory.build('courseHomeMetadata', { original_user_is_staff: true });
     const testStore = await initializeTestStore(
       {