We are passing the MTD layout via the kernel command line, so
it makes no sense to duplicate it in mach-* files. The patch
removes the built-in MTD maps of the following boards:
* AP113
* ALFA N2/N5
* DIR-600
* DIR-615
* DIR-825
* TEW-6{3,5}2BRP
* TEW-673GRU
* WHR-G301N
* WHR-HP-GN
* WHR-HP-G300N
SVN-Revision: 31108