ARM: picoxcell: remove mach/memory.h

mach/memory.h is no longer required for simple platforms so remove it
for picoxcell.

Signed-off-by: Jamie Iles <jamie@jamieiles.com>
diff --git a/arch/arm/mach-picoxcell/include/mach/memory.h b/arch/arm/mach-picoxcell/include/mach/memory.h
deleted file mode 100644
index 40a8c178..0000000
--- a/arch/arm/mach-picoxcell/include/mach/memory.h
+++ /dev/null
@@ -1 +0,0 @@
-/* empty */