diff --git a/testing/web-platform/meta/MANIFEST.json b/testing/web-platform/meta/MANIFEST.json
index 5e95d3a8245a..04a483b6a260 100644
--- a/testing/web-platform/meta/MANIFEST.json
+++ b/testing/web-platform/meta/MANIFEST.json
@@ -348546,12 +348546,6 @@
      {}
     ]
    ],
-   "webdriver/interface/interface.html": [
-    [
-     "/webdriver/interface/interface.html",
-     {}
-    ]
-   ],
    "webdriver/tests/interface.html": [
     [
      "/webdriver/tests/interface.html",
@@ -576417,10 +576411,6 @@
    "185acb69e9516e0564e16bf7d7f8dc2a4c48d3c7",
    "support"
   ],
-  "webdriver/interface/interface.html": [
-   "aa92a3a3ad1ea2a502fbf1de6ab0d5061752c8f8",
-   "testharness"
-  ],
   "webdriver/tests/__init__.py": [
    "da39a3ee5e6b4b0d3255bfef95601890afd80709",
    "support"
diff --git a/testing/web-platform/tests/webdriver/interface/interface.html b/testing/web-platform/tests/webdriver/interface/interface.html
deleted file mode 100644
index f3c149b1cee0..000000000000
--- a/testing/web-platform/tests/webdriver/interface/interface.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<body>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<script src=/resources/WebIDLParser.js></script>
-<script src=/resources/idlharness.js></script>
-<script type=text/plain class=untested>
-[Exposed=Window]
-interface Navigator {
-  // objects implementing this interface also implement the interfaces given below
-};
-</script>
-<script type=text/plain>
-Navigator implements NavigatorAutomationInformation;
-
-[NoInterfaceObject,
- Exposed=(Window)]
-interface NavigatorAutomationInformation {
-    readonly attribute boolean webdriver;
-    // always returns true
-};
-</script>
-<script>
-"use strict";
-
-if ("webdriver" in navigator) {
-  test(() => assert_true(navigator.webdriver), "navigator.webdriver is always true");
-  var idlArray = new IdlArray();
-  [].forEach.call(document.querySelectorAll("script[type=text\\/plain]"), function(node) {
-    if (node.className == "untested") {
-      idlArray.add_untested_idls(node.textContent);
-    } else {
-      idlArray.add_idls(node.textContent);
-    }
-  });
-  idlArray.test();
-} else {
-  done();
-}
-</script>
