Remove contacts tiles 9-patch from favorites tile view.

It looks like this 9-patch was responsible for the shadow which was
observed below the speed dial tiles in the associated bug. Even if
not, doesn't seem like we're using this anymore, as far as I'm
aware, so this should be safe to remove.

Bug: 15385828
Change-Id: If7eccf767562bee0367e58363142116095bf06a6
diff --git a/res/drawable-hdpi/ic_contacts_tiles.9.png b/res/drawable-hdpi/ic_contacts_tiles.9.png
deleted file mode 100644
index 572fdb8..0000000
--- a/res/drawable-hdpi/ic_contacts_tiles.9.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-mdpi/ic_contacts_tiles.9.png b/res/drawable-mdpi/ic_contacts_tiles.9.png
deleted file mode 100644
index 343053a..0000000
--- a/res/drawable-mdpi/ic_contacts_tiles.9.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-xhdpi/ic_contacts_tiles.9.png b/res/drawable-xhdpi/ic_contacts_tiles.9.png
deleted file mode 100644
index 5a56587..0000000
--- a/res/drawable-xhdpi/ic_contacts_tiles.9.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-xxhdpi/ic_contacts_tiles.9.png b/res/drawable-xxhdpi/ic_contacts_tiles.9.png
deleted file mode 100644
index 4e6872d..0000000
--- a/res/drawable-xxhdpi/ic_contacts_tiles.9.png
+++ /dev/null
Binary files differ
diff --git a/res/layout/phone_favorite_tile_view.xml b/res/layout/phone_favorite_tile_view.xml
index 7abff27..1e6b999 100644
--- a/res/layout/phone_favorite_tile_view.xml
+++ b/res/layout/phone_favorite_tile_view.xml
@@ -23,8 +23,7 @@
         android:id="@+id/contact_favorite_card"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:focusable="true"
-        android:background="@drawable/ic_contacts_tiles" >
+        android:focusable="true" >
 
         <com.android.contacts.common.widget.LayoutSuppressingImageView
             android:id="@+id/contact_tile_image"