refactor!: remove HomePageCourses API v1 [DEPR]

[irfanuddinahmad]

Summary

• Removes the HomePageCourses API v1 endpoint (GET /api/contentstore/v1/home/courses) which has been superseded by v2 since Sumac and is no longer referenced by the Authoring MFE
• Removes CourseHomeTabSerializer (exclusively used by the removed view)
• Removes HomePageCoursesViewTest and the unused imports it introduced (OrderedDict, datetime, timedelta, pytz, CourseOverviewFactory)
• Removes unused get_course_context import from views/home.py

Closes openedx/public-engineering#287

Test plan

• Existing HomePageViewTest and HomePageLibrariesViewTest still pass
• GET /api/contentstore/v1/home/courses returns 404
• GET /api/contentstore/v1/home and GET /api/contentstore/v1/home/libraries still return 200

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[Copilot]

Pull request overview

This PR removes the deprecated v1 “HomePageCourses” endpoint (GET /api/contentstore/v1/home/courses) from the CMS contentstore REST API, along with its serializer and associated v1 tests, aligning the codebase with the v2 endpoint that has superseded it.

Changes:

• Removed HomePageCoursesView from v1 views and routing (home/courses), so the endpoint is no longer exposed.
• Removed CourseHomeTabSerializer, which was only used by the deleted v1 endpoint.
• Deleted the v1 test class dedicated to the removed endpoint and cleaned up now-unused imports.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
cms/djangoapps/contentstore/rest_api/v1/views/tests/test_home.py	Removes v1 tests and imports that only existed to cover the deleted home/courses endpoint.
cms/djangoapps/contentstore/rest_api/v1/views/home.py	Deletes HomePageCoursesView and its related imports.
cms/djangoapps/contentstore/rest_api/v1/views/__init__.py	Stops exporting the removed v1 view.
cms/djangoapps/contentstore/rest_api/v1/urls.py	Removes the home/courses route and HomePageCoursesView import.
cms/djangoapps/contentstore/rest_api/v1/serializers/home.py	Removes CourseHomeTabSerializer since the endpoint is deleted.
cms/djangoapps/contentstore/rest_api/v1/serializers/__init__.py	Stops exporting the removed serializer.

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[farhan]

LGTM!