diff --git a/devtools/client/netmonitor/test/html_har_post-data-test-page.html b/devtools/client/netmonitor/test/html_har_post-data-test-page.html
deleted file mode 100644
index 050ea55d1106..000000000000
--- a/devtools/client/netmonitor/test/html_har_post-data-test-page.html
+++ /dev/null
@@ -1,33 +0,0 @@
-<!-- Any copyright is dedicated to the Public Domain.
-     http://creativecommons.org/publicdomain/zero/1.0/ -->
-<!doctype html>
-
-<html>
-  <head>
-    <meta charset="utf-8"/>
-    <meta http-equiv="Cache-Control" content="no-cache, no-store, must-revalidate" />
-    <meta http-equiv="Pragma" content="no-cache" />
-    <meta http-equiv="Expires" content="0" />
-    <title>Network Monitor Test Page</title>
-  </head>
-
-  <body>
-    <p>HAR POST data test</p>
-
-    <script type="text/javascript">
-      function post(aAddress, aData) {
-        var xhr = new XMLHttpRequest();
-        xhr.open("POST", aAddress, true);
-        xhr.setRequestHeader("Content-Type", "application/json");
-        xhr.send(aData);
-      }
-
-      function executeTest() {
-        var url = "sjs_simple-test-server.sjs";
-        var data = "{'first': 'John', 'last': 'Doe'}";
-        post(url, data);
-      }
-    </script>
-  </body>
-
-</html>
