[GARDENING] Umbrella bug for flaky test failures impacting EWS

rdar://122560532
https://bugs.webkit.org/show_bug.cgi?id=269003

Unreviewed test gardening.

Removing no longer needed expectations.

* LayoutTests/platform/mac-wk2/TestExpectations:

Canonical link: https://commits.webkit.org/278415@main

LayoutTests/platform/mac-wk2/TestExpectations

@@ -1875,12 +1875,9 @@ webkit.org/b/271059 [ Monterey x86_64 ] imported/w3c/web-platform-tests/webrtc/s
 
 webkit.org/b/264001 [ Debug ] imported/w3c/web-platform-tests/requestidlecallback/callback-multiple-calls.html [ Pass Failure ]
 
-# webkit.org/b/269003 Umbrella bug for flaky test failures impacting EWS 
-[ Monterey+ Release X86_64 ] compositing/clipping/border-radius-async-overflow-non-stacking.html [ Pass ImageOnlyFailure ]
-[ Monterey+ Release ] imported/w3c/web-platform-tests/css/css-view-transitions/rotated-cat-off-top-edge.html [ Pass ImageOnlyFailure ]
-[ Monterey+ Release ] media/audio-session-category-unmute-mute.html [ Pass Failure ]
-[ Monterey+ Release ] media/audio-session-category.html [ Pass Failure ]
-[ Monterey+ Release ] imported/w3c/web-platform-tests/preload/preload-in-data-doc.html [ Pass ImageOnlyFailure ]
+# webkit.org/b/269003 Umbrella bug for flaky test failures impacting EWS
+[ Release ] media/audio-session-category.html [ Pass Failure ]
+[ Release ] imported/w3c/web-platform-tests/preload/preload-in-data-doc.html [ Pass ImageOnlyFailure ]
 
 #webkit.org/b/269301  (2X imported/w3c/web-platform-tests/webcodecs/videoFrame (layout-tests) are constant failures)
 [ Monterey+ x86_64 ] imported/w3c/web-platform-tests/webcodecs/videoFrame-createImageBitmap.https.any.html [ Failure ]