Twelve: Drop custom rounded background for app widget

Android rounds our remote view for us
diff --git a/app/src/main/res/drawable/bg_app_widget.xml b/app/src/main/res/drawable/bg_app_widget.xml
deleted file mode 100644
index fc19b48..0000000
--- a/app/src/main/res/drawable/bg_app_widget.xml
+++ /dev/null
@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-     SPDX-FileCopyrightText: 2021 The Android Open Source Project
-     SPDX-License-Identifier: Apache-2.0
--->
-<shape xmlns:android="http://schemas.android.com/apk/res/android"
-    android:shape="rectangle">
-
-    <corners android:radius="28dp" />
-</shape>
diff --git a/app/src/main/res/layout/app_widget_now_playing.xml b/app/src/main/res/layout/app_widget_now_playing.xml
index 2e3fc16..9eaf8fb 100644
--- a/app/src/main/res/layout/app_widget_now_playing.xml
+++ b/app/src/main/res/layout/app_widget_now_playing.xml
@@ -8,8 +8,7 @@
     android:id="@+id/linearLayout"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="@drawable/bg_app_widget"
-    android:backgroundTint="?attr/colorSurface"
+    android:background="?attr/colorSurface"
     android:baselineAligned="false"
     android:gravity="center_vertical"
     android:orientation="horizontal"