--- a/browser/components/extensions/test/browser/browser-common.ini
+++ b/browser/components/extensions/test/browser/browser-common.ini
@@ -1,17 +1,16 @@
 [DEFAULT]
 prefs =
     dom.animations-api.core.enabled=true
 support-files =
   head.js
   head_pageAction.js
   head_sessions.js
   head_webNavigation.js
-  profilerSymbols.sjs
   context.html
   context_frame.html
   ctxmenu-image.png
   context_tabs_onUpdated_page.html
   context_tabs_onUpdated_iframe.html
   file_clearplugindata.html
   file_find_frames.html
   file_popup_api_injection_a.html
@@ -88,17 +87,16 @@ skip-if = (os == 'win' && !debug) # bug 
 [browser_ext_devtools_network.js]
 [browser_ext_devtools_page.js]
 [browser_ext_devtools_panel.js]
 [browser_ext_devtools_panels_elements.js]
 [browser_ext_devtools_panels_elements_sidebar.js]
 support-files =
   ../../../../../devtools/client/inspector/extensions/test/head_devtools_inspector_sidebar.js
 [browser_ext_find.js]
-[browser_ext_geckoProfiler_symbolicate.js]
 [browser_ext_getViews.js]
 [browser_ext_history_redirect.js]
 [browser_ext_identity_indication.js]
 [browser_ext_incognito_views.js]
 [browser_ext_incognito_popup.js]
 [browser_ext_lastError.js]
 [browser_ext_menus.js]
 [browser_ext_menus_event_order.js]

deleted file mode 100644
--- a/browser/components/extensions/test/browser/browser_ext_geckoProfiler_symbolicate.js
+++ /dev/null
@@ -1,57 +0,0 @@
-/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
-/* vim: set sts=2 sw=2 et tw=80: */
-"use strict";
-
-let getExtension = () => {
-  return ExtensionTestUtils.loadExtension({
-    background: async function() {
-      const [addresses, indices, strings] = await browser.geckoProfiler.getSymbols("test.pdb",
-                                                                                   "ASDFQWERTY");
-
-      function getSymbolAtAddress(address) {
-        const index = addresses.indexOf(address);
-        if (index == -1) {
-          return null;
-        }
-
-        const nameBuffer = strings.subarray(indices[index], indices[index + 1]);
-        const decoder = new TextDecoder("utf-8");
-
-        return decoder.decode(nameBuffer);
-      }
-
-      browser.test.assertEq(getSymbolAtAddress(0x3fc74), "test_public_symbol", "Contains public symbol");
-      browser.test.assertEq(getSymbolAtAddress(0x40330), "test_func_symbol", "Contains func symbol");
-      browser.test.sendMessage("symbolicated");
-    },
-
-    manifest: {
-      "permissions": ["geckoProfiler"],
-      "applications": {
-        "gecko": {
-          "id": "profilertest@mozilla.com",
-        },
-      },
-    },
-  });
-};
-
-add_task(async function testProfilerControl() {
-  await SpecialPowers.pushPrefEnv({
-    set: [
-      [
-        "extensions.geckoProfiler.symbols.url",
-        "http://mochi.test:8888/browser/browser/components/extensions/test/browser/profilerSymbols.sjs?path=",
-      ],
-      [
-        "extensions.geckoProfiler.acceptedExtensionIds",
-        "profilertest@mozilla.com",
-      ],
-    ],
-  });
-
-  let extension = getExtension();
-  await extension.startup();
-  await extension.awaitMessage("symbolicated");
-  await extension.unload();
-});

deleted file mode 100644
--- a/browser/components/extensions/test/browser/profilerSymbols.sjs
+++ /dev/null
@@ -1,27 +0,0 @@
-/* Any copyright is dedicated to the Public Domain.
- * http://creativecommons.org/publicdomain/zero/1.0/ */
-
-const SYMBOLS_FILE =
-`MODULE windows x86_64 A712ED458B2542C18785C19D17D64D842 test.pdb
-
-INFO CODE_ID 58EE0F7F3EDD000 test.dll
-
-PUBLIC 3fc74 0 test_public_symbol
-
-FUNC 40330 8e 0 test_func_symbol
-
-40330 42 22 2229
-
-40372 3a 23 2229
-
-403ac 12 23 2229
-`;
-
-function handleRequest(req, resp) {
-  let match = /path=([^\/]+)\/([^\/]+)\/([^\/]+)/.exec(req.queryString);
-  if (match && match[1] == "test.pdb") {
-    resp.write(SYMBOLS_FILE);
-  } else {
-    resp.setStatusLine(null, 404, 'Not Found');
-  }
-}