kconfig: nuke LKC_DIRECT_LINK cruft

This interface is not (and has never been ?) used by any frontend, just get rid
of it.

Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>

diff --cc scripts/kconfig/Makefile
Simple merge

diff --cc scripts/kconfig/conf.c
Simple merge

diff --cc scripts/kconfig/confdata.c
Simple merge

diff --cc scripts/kconfig/expr.c
Simple merge

diff --cc scripts/kconfig/gconf.c
Simple merge

diff --cc scripts/kconfig/kconfig_load.c
Simple merge

diff --cc scripts/kconfig/kxgettext.c
Simple merge

diff --cc scripts/kconfig/lex.zconf.c_shipped
Simple merge

diff --cc scripts/kconfig/lkc.h
Simple merge

diff --cc scripts/kconfig/mconf.c
Simple merge

diff --cc scripts/kconfig/menu.c
Simple merge

diff --cc scripts/kconfig/nconf.c
Simple merge

diff --cc scripts/kconfig/qconf.cc
Simple merge

diff --cc scripts/kconfig/symbol.c
Simple merge

diff --cc scripts/kconfig/zconf.l
Simple merge

diff --cc scripts/kconfig/zconf.tab.c_shipped
Simple merge

diff --cc scripts/kconfig/zconf.y
Simple merge