refactor: apply lint-amnesty on existing violations

...on/djangoapps/student/management/commands/assigngroups.py

common/djangoapps/student/models.py

common/djangoapps/util/models.py

common/lib/xmodule/xmodule/assetstore/__init__.py

common/lib/xmodule/xmodule/contentstore/mongo.py

common/lib/xmodule/xmodule/modulestore/mongo/base.py

common/lib/xmodule/xmodule/partitions/partitions_service.py

common/lib/xmodule/xmodule/seq_module.py

common/lib/xmodule/xmodule/split_test_module.py

...s/content/course_overviews/tests/test_course_overviews.py

openedx/core/djangoapps/content_libraries/library_bundle.py

openedx/core/djangoapps/profile_images/tests/test_images.py

openedx/core/djangoapps/profile_images/tests/test_views.py

openedx/core/djangoapps/programs/__init__.py

openedx/core/djangoapps/programs/tasks.py

openedx/core/djangoapps/schedules/config.py

...core/djangoapps/schedules/management/commands/__init__.py

openedx/core/djangoapps/schedules/models.py

...ore/djangoapps/schedules/tests/test_content_highlights.py

openedx/core/djangoapps/user_api/accounts/utils.py