Close #20674: Remove elevation from inactive tabs card

app/src/main/res/layout/inactive_footer_item.xml

@@ -11,7 +11,6 @@
     android:layout_marginEnd="16dp"
     android:layout_marginBottom="8dp"
     android:background="@drawable/rounded_bottom_corners"
-    android:elevation="@dimen/home_item_elevation"
     android:paddingBottom="8dp">
 
     <View

app/src/main/res/layout/inactive_header_item.xml

@@ -12,7 +12,6 @@
     android:background="@drawable/rounded_top_corners"
     android:clickable="false"
     android:clipToPadding="false"
-    android:elevation="@dimen/home_item_elevation"
     android:focusable="true"
     android:foreground="?android:attr/selectableItemBackground"
     android:paddingStart="16dp"

app/src/main/res/layout/inactive_tab_list_item.xml

@@ -10,6 +10,5 @@
     android:layout_marginStart="16dp"
     android:layout_marginEnd="16dp"
     android:background="?above"
-    android:elevation="@dimen/home_item_elevation"
     android:foreground="?android:attr/selectableItemBackground"
     android:minHeight="@dimen/mozac_widget_site_item_height" />