Fetch: cleanup api/cors/cors-filtering

I forgot about this one last time around somehow. No .html left in this directory after this one though.
diff --git a/fetch/api/cors/cors-filtering-worker.html b/fetch/api/cors/cors-filtering-worker.html
deleted file mode 100644
index f15566f..0000000
--- a/fetch/api/cors/cors-filtering-worker.html
+++ /dev/null
@@ -1,18 +0,0 @@
-<!doctype html>
-<html>
-  <head>
-    <meta charset="utf-8">
-    <title>Fetch in worker: filtered headers in CORS response</title>
-    <meta name="help" href="https://fetch.spec.whatwg.org/#main-fetch">
-    <meta name="help" href="https://fetch.spec.whatwg.org/#http-cors-protocol">
-    <meta name="help" href="https://fetch.spec.whatwg.org/#concept-filtered-response-cors">
-    <meta name="author" title="Canon Research France" href="https://www.crf.canon.fr">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-  </head>
-  <body>
-    <script>
-      fetch_tests_from_worker(new Worker("cors-filtering.js?pipe=sub"));
-    </script>
-  </body>
-</html>
\ No newline at end of file
diff --git a/fetch/api/cors/cors-filtering.html b/fetch/api/cors/cors-filtering.html
deleted file mode 100644
index b7500ad..0000000
--- a/fetch/api/cors/cors-filtering.html
+++ /dev/null
@@ -1,17 +0,0 @@
-<!doctype html>
-<html>
-  <head>
-    <meta charset="utf-8">
-    <title>Fetch: filtered headers in CORS response</title>
-    <meta name="help" href="https://fetch.spec.whatwg.org/#main-fetch">
-    <meta name="help" href="https://fetch.spec.whatwg.org/#http-cors-protocol">
-    <meta name="help" href="https://fetch.spec.whatwg.org/#concept-filtered-response-cors">
-    <meta name="author" title="Canon Research France" href="https://www.crf.canon.fr">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-  </head>
-  <body>
-    <script src="../resources/utils.js"></script>
-    <script src="cors-filtering.js?pipe=sub"></script>
-  </body>
-</html>
\ No newline at end of file
diff --git a/fetch/api/cors/cors-filtering.js b/fetch/api/cors/cors-filtering.sub.any.js
similarity index 95%
rename from fetch/api/cors/cors-filtering.js
rename to fetch/api/cors/cors-filtering.sub.any.js
index e755a16..a26eacc 100644
--- a/fetch/api/cors/cors-filtering.js
+++ b/fetch/api/cors/cors-filtering.sub.any.js
@@ -1,7 +1,4 @@
-if (this.document === undefined) {
-  importScripts("/resources/testharness.js");
-  importScripts("../resources/utils.js");
-}
+// META: script=../resources/utils.js
 
 function corsFilter(corsUrl, headerName, headerValue, isFiltered) {
   var url = corsUrl + "?pipe=header(" + headerName + "," + encodeURIComponent(headerValue) +")|header(Access-Control-Allow-Origin,*)";