diff --git a/browser/extensions/report-site-issue/background.js b/browser/extensions/report-site-issue/background.js
index 23b6afdfde7a..146e9b409b63 100644
--- a/browser/extensions/report-site-issue/background.js
+++ b/browser/extensions/report-site-issue/background.js
@@ -17,8 +17,6 @@ const Config = {
 
 const FRAMEWORK_KEYS = ["hasFastClick", "hasMobify", "hasMarfeel"];
 
-browser.pageActionExtras.setLabelForHistogram("webcompat");
-
 browser.helpMenu.onHelpMenuCommand.addListener(tab => {
   return getWebCompatInfoForTab(tab).then(
     info => {
@@ -156,14 +154,6 @@ function stripNonASCIIChars(str) {
   return str.replace(/[^\x00-\x7F]/g, "");
 }
 
-browser.l10n
-  .getMessage("wc-reporter.label2")
-  .then(browser.pageActionExtras.setDefaultTitle, () => {});
-
-browser.l10n
-  .getMessage("wc-reporter.tooltip")
-  .then(browser.pageActionExtras.setTooltipText, () => {});
-
 async function openWebCompatTab(compatInfo) {
   const url = new URL(Config.newIssueEndpoint);
   const { details } = compatInfo;
diff --git a/browser/extensions/report-site-issue/experimentalAPIs/pageActionExtras.js b/browser/extensions/report-site-issue/experimentalAPIs/pageActionExtras.js
deleted file mode 100644
index 19ee738a6098..000000000000
--- a/browser/extensions/report-site-issue/experimentalAPIs/pageActionExtras.js
+++ /dev/null
@@ -1,43 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-"use strict";
-
-/* global ExtensionAPI */
-
-this.pageActionExtras = class extends ExtensionAPI {
-  getAPI(context) {
-    const extension = context.extension;
-    const pageActionAPI = extension.apiManager.getAPI(
-      "pageAction",
-      extension,
-      context.envType
-    );
-    const {
-      Management: {
-        global: { windowTracker },
-      },
-    } = ChromeUtils.import("resource://gre/modules/Extension.jsm", null);
-    return {
-      pageActionExtras: {
-        async setDefaultTitle(title) {
-          pageActionAPI.action.getContextData(null).title = title;
-          // Make sure the new default title is considered right away
-          for (const window of windowTracker.browserWindows()) {
-            const tab = window.gBrowser.selectedTab;
-            if (pageActionAPI.action.isShownForTab(tab)) {
-              pageActionAPI.updateButton(window);
-            }
-          }
-        },
-        async setLabelForHistogram(label) {
-          pageActionAPI.browserPageAction._labelForHistogram = label;
-        },
-        async setTooltipText(text) {
-          pageActionAPI.browserPageAction.setTooltip(text);
-        },
-      },
-    };
-  }
-};
diff --git a/browser/extensions/report-site-issue/experimentalAPIs/pageActionExtras.json b/browser/extensions/report-site-issue/experimentalAPIs/pageActionExtras.json
deleted file mode 100644
index df848e439a63..000000000000
--- a/browser/extensions/report-site-issue/experimentalAPIs/pageActionExtras.json
+++ /dev/null
@@ -1,41 +0,0 @@
-[
-  {
-    "namespace": "pageActionExtras",
-    "description": "experimental pageAction API extensions",
-    "functions": [
-      {
-        "name": "setDefaultTitle",
-        "type": "function",
-        "async": true,
-        "description": "Set the page action's title for all tabs",
-        "parameters": [{
-          "name": "title",
-          "type": "string",
-          "description": "title"
-        }]
-      },
-      {
-        "name": "setLabelForHistogram",
-        "type": "function",
-        "async": true,
-        "description": "Set the page action's label for telemetry histograms",
-        "parameters": [{
-          "name": "label",
-          "type": "string",
-          "description": "label for the histogram"
-        }]
-      },
-      {
-        "name": "setTooltipText",
-        "type": "function",
-        "async": true,
-        "description": "Set the page action's tooltip text",
-        "parameters": [{
-          "name": "text",
-          "type": "string",
-          "description": "text"
-        }]
-      }
-    ]
-  }
-]
diff --git a/browser/extensions/report-site-issue/manifest.json b/browser/extensions/report-site-issue/manifest.json
index a5fc38d2f6ad..454b851b5a1c 100644
--- a/browser/extensions/report-site-issue/manifest.json
+++ b/browser/extensions/report-site-issue/manifest.json
@@ -43,14 +43,6 @@
         "paths": [["l10n"]]
       }
     },
-    "pageActionExtras": {
-      "schema": "experimentalAPIs/pageActionExtras.json",
-      "parent": {
-        "scopes": ["addon_parent"],
-        "script": "experimentalAPIs/pageActionExtras.js",
-        "paths": [["pageActionExtras"]]
-      }
-    },
     "tabExtras": {
       "schema": "experimentalAPIs/tabExtras.json",
       "parent": {
diff --git a/browser/extensions/report-site-issue/moz.build b/browser/extensions/report-site-issue/moz.build
index 17a2ea1c7642..404861c6c4c7 100644
--- a/browser/extensions/report-site-issue/moz.build
+++ b/browser/extensions/report-site-issue/moz.build
@@ -23,8 +23,6 @@ FINAL_TARGET_FILES.features["webcompat-reporter@mozilla.org"].experimentalAPIs +
     "experimentalAPIs/helpMenu.json",
     "experimentalAPIs/l10n.js",
     "experimentalAPIs/l10n.json",
-    "experimentalAPIs/pageActionExtras.js",
-    "experimentalAPIs/pageActionExtras.json",
     "experimentalAPIs/tabExtras.js",
     "experimentalAPIs/tabExtras.json",
 ]