Merge pull request #27502 from edx/mikix/drop-email-marketing

common/djangoapps/student/models.py

common/djangoapps/student/signals/__init__.py

common/djangoapps/student/signals/signals.py

common/djangoapps/util/model_utils.py

docs/decisions/0007-sys-path-modification-removal.rst

docs/guides/docstrings/lms_index.rst

lms/djangoapps/commerce/api/v0/tests/test_views.py

lms/djangoapps/commerce/api/v0/views.py

lms/djangoapps/email_marketing/admin.py

lms/djangoapps/email_marketing/apps.py

lms/djangoapps/email_marketing/signals.py

lms/djangoapps/email_marketing/tasks.py

lms/djangoapps/email_marketing/tests/__init__.py

lms/djangoapps/email_marketing/tests/test_signals.py

lms/djangoapps/verify_student/tests/test_views.py

lms/envs/production.py

openedx/core/djangoapps/user_authn/apps.py

openedx/core/djangoapps/user_authn/signals.py

openedx/core/djangoapps/user_authn/tests/test_signals.py

openedx/features/enterprise_support/signals.py