diff --git a/test/resources/firefox/prefs.js b/test/resources/firefox/prefs.js
deleted file mode 100644
index 343384338..000000000
--- a/test/resources/firefox/prefs.js
+++ /dev/null
@@ -1,2 +0,0 @@
-user_pref("browser.shell.checkDefaultBrowser", false);
-user_pref('extensions.autoDisableScopes', 14);