Messaging: Fix indicated issues in layouts

Follow AS recommendations

Change-Id: I7a5241651ccd3fd5ea5efce44db848e3bc3a1c12

res/layout/attachment_pending_item.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!--
     Copyright (C) 2015 The Android Open Source Project
+    Copyright (C) 2024 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.
@@ -21,7 +22,6 @@
         android:orientation="vertical">
 
     <ImageView
-        xmlns:android="http://schemas.android.com/apk/res/android"
         android:id="@+id/pending_item_view"
         android:layout_width="@dimen/pending_attachment_size"
         android:layout_height="@dimen/pending_attachment_size"