Change background in Main screen.

ui/src/main/res/drawable/main_background.xml

@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<selector xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <item>
-        <shape android:shape="rectangle">
-            <gradient android:endColor="@color/main_background_end_color" android:centerColor="@color/main_background_center_color" android:startColor="@color/main_background_start_color" />
-        </shape>
-    </item>
-</selector>

ui/src/main/res/layout/activity_main.xml

@@ -5,7 +5,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="@drawable/main_background"
+    android:background="@drawable/bkrnd"
     tools:context="com.wireguard.android.activity.MainActivity">