ARM: davinci: remove dummy header files

These dummy headers are unused. Commit
6ea96e111e6a7f06ef62227bf64e8cd65bd705b3 ("ARM: davinci: add back dummy
header files") only added them as a temporary measure. They can be
removed now.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

arch/arm/mach-davinci/include/mach/dm365.h

@@ -1 +0,0 @@
-/* empty, remove once unused */

arch/arm/mach-davinci/include/mach/dm646x.h

@@ -1 +0,0 @@
-/* empty, remove once unused */