diff --git a/html/semantics/scripting-1/the-script-element/module/import-subgraph-404.html b/html/semantics/scripting-1/the-script-element/module/import-subgraph-404.html
deleted file mode 100644
index 4911a071a0fb68..00000000000000
--- a/html/semantics/scripting-1/the-script-element/module/import-subgraph-404.html
+++ /dev/null
@@ -1,14 +0,0 @@
-<!DOCTYPE html>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<script type="module">
-import { delayedLoaded }  from "./resources/delayed-modulescript.py";
-import { A } from "./404.js";
-window.loadSuccess = delayedLoaded;
-</script>
-<script type="module">
-test(function () {
-    assert_equals(window.loadSuccess, undefined,
-      "module tree w/ its sub graph 404 should fail to load without crashing");
-}, "Import a module graph w/ sub-graph 404.");
-</script>
diff --git a/html/semantics/scripting-1/the-script-element/module/resources/delayed-modulescript.py b/html/semantics/scripting-1/the-script-element/module/resources/delayed-modulescript.py
deleted file mode 100644
index 6ed16212d71920..00000000000000
--- a/html/semantics/scripting-1/the-script-element/module/resources/delayed-modulescript.py
+++ /dev/null
@@ -1,7 +0,0 @@
-import time
-
-def main(request, response):
-    delay = float(request.GET.first("ms", 500))
-    time.sleep(delay / 1E3);
-
-    return [("Content-type", "text/javascript")], "export let delayedLoaded = true;"
