refactor: remove unused GET /evaluations/feedbacks/all endpoint (#24778)

GET /evaluations/feedbacks/all returned the entire feedback table in a
single response (flagged as a Medium OOM risk for admins in
open-webui#22206). Its only frontend wrapper, getAllFeedbacks in
src/lib/apis/evaluations/index.ts, is dead: nothing imports or calls it
anywhere in the codebase. The endpoint is a redundant view-only twin of
GET /evaluations/feedbacks/all/export, which is what the admin Feedbacks
UI actually uses.

Removes the endpoint, the now-unused FeedbackResponse import in the
evaluations router, and the dead getAllFeedbacks frontend wrapper. The
shared Feedbacks.get_all_feedbacks data-layer method is kept, since the
live /feedbacks/all/export endpoint still uses it.

Ref: open-webui#22206

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

backend/open_webui/routers/evaluations.py

@@ -10,7 +10,6 @@ from open_webui.models.feedbacks import (
     FeedbackIdResponse,
     FeedbackListResponse,
     FeedbackModel,
-    FeedbackResponse,
     Feedbacks,
     FeedbackUserResponse,
     LeaderboardFeedbackData,
@@ -295,12 +294,6 @@ async def get_feedback_model_ids(user=Depends(get_admin_user), db: AsyncSession
     return await Feedbacks.get_distinct_model_ids(db=db)
 
 
-@router.get('/feedbacks/all', response_model=list[FeedbackResponse])
-async def get_all_feedbacks(user=Depends(get_admin_user), db: AsyncSession = Depends(get_async_session)):
-    feedbacks = await Feedbacks.get_all_feedbacks(db=db)
-    return feedbacks
-
-
 @router.get('/feedbacks/all/ids', response_model=list[FeedbackIdResponse])
 async def get_all_feedback_ids(user=Depends(get_admin_user), db: AsyncSession = Depends(get_async_session)):
     return await Feedbacks.get_all_feedback_ids(db=db)