feat!: Drop support for the legacy Grading page.

The legacy Grading page in Studio has been replaced with a new view in
the Authoring MFE. This change removes the now unused JS/HTML/Python
related to the old page.

This work is part of #36108

BREAKING CHANGE: The 'legacy_studio.grading' waffle flag will no longer
be respected. The system will behave as if the flag is set to false
permanently.

Author: irfanuddinahmad

cms/djangoapps/contentstore/views/course.py

@@ -100,14 +100,12 @@
 from ..toggles import (
     default_enable_flexible_peer_openassessments,
     use_new_advanced_settings_page,
-    use_new_grading_page,
     use_new_group_configurations_page,
     use_new_schedule_details_page,
 )
 from ..utils import (
     add_instructor,
     get_advanced_settings_url,
-    get_course_grading,
     get_course_outline_url,
     get_course_rerun_context,
     get_course_settings,
@@ -1425,10 +1423,7 @@ def grading_handler(request, course_key_string, grader_index=None):
             raise PermissionDenied()
 
         if 'text/html' in request.META.get('HTTP_ACCEPT', '') and request.method == 'GET':
-            if use_new_grading_page(course_key):
-                return redirect(get_grading_url(course_key))
-            grading_context = get_course_grading(course_key)
-            return render_to_response('settings_graders.html', grading_context)
+            return redirect(get_grading_url(course_key))
         elif 'application/json' in request.META.get('HTTP_ACCEPT', ''):
             if request.method == 'GET':
                 if grader_index is None:

cms/static/cms/js/build.js

@@ -27,8 +27,7 @@
             'js/factories/manage_users',
             'js/factories/outline',
             'js/factories/settings',
-            'js/factories/settings_advanced',
-            'js/factories/settings_graders'
+            'js/factories/settings_advanced'
         ]),
         /**
          * By default all the configuration for optimization happens from the command