microblaze: Remove incorrect file path

Trivial.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/microblaze/boot/dts/Makefile b/arch/microblaze/boot/dts/Makefile
index c3b3a5d..c4982d1 100644
--- a/arch/microblaze/boot/dts/Makefile
+++ b/arch/microblaze/boot/dts/Makefile
@@ -1,6 +1,4 @@
 #
-# arch/microblaze/boot/Makefile
-#
 
 obj-y += linked_dtb.o