fix: test cases fixed

lms/djangoapps/discussion/rest_api/api.py

@@ -31,7 +31,6 @@ from rest_framework.response import Response
 from common.djangoapps.student.roles import (
     CourseInstructorRole,
     CourseStaffRole,
-    GlobalStaff,
 )
 
 from lms.djangoapps.course_blocks.api import get_course_blocks

lms/djangoapps/discussion/rest_api/tests/test_api.py

@@ -201,6 +201,8 @@ class GetCourseTest(ForumsEnableMixin, UrlResetMixin, SharedModuleStoreTestCase)
             'group_at_subsection': False,
             'provider': 'legacy',
             'has_moderation_privileges': False,
+            "is_course_staff": False,
+            "is_course_admin": False,
             'is_group_ta': False,
             'is_user_admin': False,
             'user_roles': {'Student'},

lms/djangoapps/discussion/rest_api/tests/test_views.py

@@ -521,6 +521,8 @@ class CourseViewTest(DiscussionAPIViewTestMixin, ModuleStoreTestCase):
                 "allow_anonymous": True,
                 "allow_anonymous_to_peers": False,
                 "has_moderation_privileges": False,
+                'is_course_admin': False,
+                'is_course_staff': False,
                 "is_group_ta": False,
                 'is_user_admin': False,
                 "user_roles": ["Student"],