[fenix] For https://github.com/mozilla-mobile/fenix/issues/9670: Disabled intermittent tabMediaControlButton test (https://github.com/mozilla-mobile/fenix/pull/9679)

and removed file created by mistake -e

added reason for disabled tests

app/src/androidTest/java/org/mozilla/fenix/ui/MediaNotificationTest.kt

@@ -7,6 +7,7 @@ package org.mozilla.fenix.ui
 import okhttp3.mockwebserver.MockWebServer
 import org.junit.After
 import org.junit.Before
+import org.junit.Ignore
 import org.junit.Rule
 import org.junit.Test
 import org.mozilla.fenix.helpers.AndroidAssetDispatcher
@@ -88,6 +89,7 @@ class MediaNotificationTest {
     }
 
     @Test
+    @Ignore("Temp disable test - see: https://github.com/mozilla-mobile/fenix/issues/9670")
     fun tabMediaControlButtonTest() {
         val audioTestPage = TestAssetHelper.getAudioPageAsset(mockWebServer)