Revert "WIP:Cache course runs to programs"

cms/djangoapps/contentstore/views/tests/test_videos.py

common/djangoapps/student/views/dashboard.py

common/djangoapps/terrain/stubs/catalog.py

common/test/acceptance/fixtures/catalog.py

common/test/acceptance/tests/lms/test_programs.py

lms/djangoapps/courseware/tests/test_video_mongo.py

lms/djangoapps/courseware/views/views.py

openedx/core/djangoapps/catalog/cache.py

.../djangoapps/catalog/management/commands/cache_programs.py

.../catalog/management/commands/tests/test_cache_programs.py

openedx/core/djangoapps/catalog/tests/factories.py

openedx/core/djangoapps/catalog/tests/test_utils.py

openedx/core/djangoapps/catalog/utils.py

openedx/core/djangoapps/programs/utils.py

...ser_api/management/commands/migrate_user_profile_langs.py