Remove dead M-Systems Disk on Chip code

DOC support has been disabled by default for many years. The write function
does nothing but print text. It has a call to write_page_md2802() commented
out, but that function does not exist. This is dead code with ugly #ifdefs.

Updates README to reflect that there was a time when there was code, but it
didn't work. Removes M-Systems #defines and also includes svn rm msys_doc.*

Corresponding to flashrom svn r269 and coreboot v2 svn r3382.

Signed-off-by: Peter Stuge <peter@stuge.se>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
diff --git a/Makefile b/Makefile
index 26b3916..f6234f1 100644
--- a/Makefile
+++ b/Makefile
@@ -11,7 +11,7 @@
 INSTALL = /usr/bin/install
 PREFIX  = /usr/local
 #CFLAGS  = -O2 -g -Wall -Werror
-CFLAGS  = -Os -Wall -Werror -DDISABLE_DOC # -DTS5300
+CFLAGS  = -Os -Wall -Werror # -DTS5300
 OS_ARCH	= $(shell uname)
 ifeq ($(OS_ARCH), SunOS)
 LDFLAGS = -lpci -lz
@@ -26,7 +26,7 @@
 
 OBJS = chipset_enable.o board_enable.o udelay.o jedec.o stm50flw0x0x.o \
 	sst28sf040.o am29f040b.o mx29f002.o sst39sf020.o m29f400bt.o \
-	w49f002u.o 82802ab.o msys_doc.o pm49fl00x.o sst49lf040.o \
+	w49f002u.o 82802ab.o pm49fl00x.o sst49lf040.o \
 	sst49lfxxxc.o sst_fwhub.o layout.o cbtable.o flashchips.o \
 	flashrom.o w39v080fa.o sharplhf00l04.o w29ee011.o spi.o it87spi.o \
 	ichspi.o