Revert "Merge pull request #25515 from edx/diana/edx-search"

cms/djangoapps/contentstore/courseware_index.py

...goapps/contentstore/management/commands/reindex_course.py

cms/djangoapps/contentstore/signals/handlers.py

cms/djangoapps/contentstore/tests/test_courseware_index.py

cms/envs/production.py

lms/djangoapps/course_api/tests/test_views.py

lms/djangoapps/teams/search_indexes.py

lms/djangoapps/teams/views.py

lms/envs/production.py

requirements/constraints.txt

requirements/edx/base.txt

requirements/edx/development.txt

requirements/edx/testing.txt