Move mtd_bdi_*mappable to mtdcore.c

Removes one .h and one .c file that are never used outside of
mtdcore.c.

Signed-off-by: Joern Engel <joern@logfs.org>

Edited to remove on leftover debug define.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/drivers/mtd/Makefile b/drivers/mtd/Makefile
index 82d1e4d..4521b1e 100644
--- a/drivers/mtd/Makefile
+++ b/drivers/mtd/Makefile
@@ -4,7 +4,7 @@
 
 # Core functionality.
 obj-$(CONFIG_MTD)		+= mtd.o
-mtd-y				:= mtdcore.o mtdsuper.o mtdbdi.o
+mtd-y				:= mtdcore.o mtdsuper.o
 mtd-$(CONFIG_MTD_PARTITIONS)	+= mtdpart.o
 
 obj-$(CONFIG_MTD_CONCAT)	+= mtdconcat.o