Remove Firefox policy/autoconfig

This seems to be interfering with Marionette?

overlay/usr/lib64/firefox/defaults/pref/autoconfig.js

@@ -1,2 +0,0 @@
-pref("general.config.filename", "firefox.cfg");
-pref("general.config.obscure_value", 0);

overlay/usr/lib64/firefox/distribution/policies.json

@@ -1,10 +0,0 @@
-{
-    "policies": {
-        "BlockAboutConfig": true,
-        "Extensions": {
-            "Install": [
-                "https://addons.mozilla.org/firefox/downloads/file/1105247/auto_fullscreen-1.0.0.2-fx.xpi"
-            ]
-        }
-    }
-}

overlay/usr/lib64/firefox/firefox.cfg

@@ -1,2 +0,0 @@
-// Load preferences from remote
-pref("autoadmin.global_config_url","http://rosalina.pyrocufflink.blue/~dustin/autoconfigfile.js");