## TASK-042-003: Delete Empty RFC9110 Folders

- Verified `src/TurboHttp.Tests/RFC9110/` and `src/TurboHttp.StreamTests/RFC9110/` do not exist
- Confirmed build succeeds with 0 warnings and 0 errors
- Verified all 3641 TurboHttp.Tests pass
- Verified all 658 TurboHttp.StreamTests pass
- Updated feature_042.md to mark all acceptance criteria complete

RFC9110 folders were successfully deleted as cleanup in previous migration commits (TASK-042-001 and TASK-042-002).

Author: st0o0

.maggus/features/feature_042.md .maggus/features/feature_042_completed.md.maggus/features/feature_042.md renamed to .maggus/features/feature_042_completed.md

@@ -87,7 +87,7 @@ StreamTests/Semantics/ (Compression, Retry, Redirect, Expect100 stages).
 **Acceptance Criteria:**
 - [x] `src/TurboHttp.Tests/RFC9110/` does not exist
 - [x] `src/TurboHttp.StreamTests/RFC9110/` does not exist
-- [ ] Build and all tests green after deletion
+- [x] Build and all tests green after deletion
 
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