overlay: Disable config_keyguardUserSwitcher on sw600dp

* It's not behaving properly and I don't feel like fixing it.

Change-Id: I634a9abe99299d66a94f9d1ff7d8011476646933

overlay/common/frameworks/base/packages/SystemUI/res/values-sw600dp/config.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2019 The LineageOS Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<!-- These resources are around just to allow their values to be customized
+     for different hardware and product builds. -->
+<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
+    <!-- Set to true to enable the user switcher on the keyguard. -->
+    <bool name="config_keyguardUserSwitcher">false</bool>
+</resources>