diff --git a/tests/wpt/metadata/mediasession/idlharness.window.js.ini b/tests/wpt/metadata/mediasession/idlharness.window.js.ini
index 5e65e535b96..c6afb039eed 100644
--- a/tests/wpt/metadata/mediasession/idlharness.window.js.ini
+++ b/tests/wpt/metadata/mediasession/idlharness.window.js.ini
@@ -1,13 +1,4 @@
 [idlharness.window.html]
-  [MediaSession interface: calling setPositionState(MediaPositionState) on navigator.mediaSession with too few arguments must throw TypeError]
-    expected: FAIL
-
-  [MediaSession interface: navigator.mediaSession must inherit property "setPositionState(MediaPositionState)" with the proper type]
-    expected: FAIL
-
-  [MediaSession interface: operation setPositionState(MediaPositionState)]
-    expected: FAIL
-
   [MediaMetadata interface: attribute artwork]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/mediasession/positionstate.html.ini b/tests/wpt/metadata/mediasession/positionstate.html.ini
deleted file mode 100644
index ca73e31fb84..00000000000
--- a/tests/wpt/metadata/mediasession/positionstate.html.ini
+++ /dev/null
@@ -1,19 +0,0 @@
-[positionstate.html]
-  [Test setPositionState with a null value]
-    expected: FAIL
-
-  [Test setPositionState with zero duration]
-    expected: FAIL
-
-  [Test setPositionState with a valid value for forward playback]
-    expected: FAIL
-
-  [Test setPositionState with optional position]
-    expected: FAIL
-
-  [Test setPositionState with only duration]
-    expected: FAIL
-
-  [Test setPositionState with optional playback rate]
-    expected: FAIL
-