[GStreamer][WebRTC] Gardening

https://bugs.webkit.org/show_bug.cgi?id=298837

Unreviewed, update WPT WebRTC test expectations after the recent sync from upstream.

* LayoutTests/platform/glib/TestExpectations:

Canonical link: https://commits.webkit.org/299939@main

Author: philn

LayoutTests/platform/glib/TestExpectations

@@ -2813,11 +2813,8 @@ imported/w3c/web-platform-tests/webrtc/RTCDTMFSender-insertDTMF.https.html [ Pas
 imported/w3c/web-platform-tests/webrtc/RTCDTMFSender-ontonechange.https.html [ Pass ]
 imported/w3c/web-platform-tests/webrtc/RTCDTMFSender-ontonechange-long.https.html [ Pass ]
 
-# This test is buggy, has duplicate (copy/paste?) addTransceiver calls. That issue was fixed in upstream WPT.
-# This test was rewritten and split as webrtc/RTCRtpReceiver-{audio,video}-jitterBufferTarget-stats.https.html
 imported/w3c/web-platform-tests/webrtc/RTCRtpReceiver-audio-jitterBufferTarget-stats.https.html [ Pass ]
-# This test hasn't been imported yet.
-#imported/w3c/web-platform-tests/webrtc/RTCRtpReceiver-video-jitterBufferTarget-stats.https.html [ Pass ]
+imported/w3c/web-platform-tests/webrtc/RTCRtpReceiver-video-jitterBufferTarget-stats.html [ Pass ]
 
 webkit.org/b/235885 webrtc/vp9.html [ Slow Failure ]
 webrtc/vp9-sw.html [ Failure ]