ARC: Remove unused DT template file

Commit abe11ddea1d759f9 "Enabling DeviceTree for Angel4 board" made
angel4.dts as default leaving the orphan skeleton file behind.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
diff --git a/arch/arc/boot/dts/skeleton.dts b/arch/arc/boot/dts/skeleton.dts
deleted file mode 100644
index 25a84fb..0000000
--- a/arch/arc/boot/dts/skeleton.dts
+++ /dev/null
@@ -1,10 +0,0 @@
-/*
- * Copyright (C) 2012 Synopsys, Inc. (www.synopsys.com)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-/dts-v1/;
-
-/include/ "skeleton.dtsi"