[Catalog] Remove horizontal padding from toolbar demo

PiperOrigin-RevId: 678374802

Author: dsn5ft

catalog/java/io/material/catalog/topappbar/res/layout/cat_topappbar_toolbar_fragment.xml

@@ -25,8 +25,6 @@
       android:layout_height="wrap_content"
       android:paddingTop="32dp"
       android:paddingBottom="32dp"
-      android:paddingLeft="16dp"
-      android:paddingRight="16dp"
       android:clipToPadding="false"
       android:orientation="vertical">