ndis(4): remove as previous announced

nids(4) was a clever idea in the early 2000's when the market was
flooded with 10/100 NICs with Windows-only drivers, but that hasn't been
the case for ages and the driver has had no meaningful maintenance in
ages. It only supports Windows-XP era drivers.

Also remove:
 - ndis support from wpa_supplicant
 - ndiscvt(8)

Reviewed By:	emaste, bcr (manpages)
Differential Revision:	https://reviews.freebsd.org/D27609

ObsoleteFiles.inc

@@ -36,6 +36,15 @@
 #   xargs -n1 | sort | uniq -d;
 # done
 
+# 20210125: ndis driver support removed
+OLD_FILES+=usr/sbin/ndiscvt
+OLD_FILES+=usr/sbin/ndisgen
+OLD_FILES+=usr/share/man/man4/ndis.4.gz
+OLD_FILES+=usr/share/man/man4/if_ndis.4.gz
+OLD_FILES+=usr/share/man/man8/ndiscvt.8.gz
+OLD_FILES+=usr/share/man/man8/ndisgen.8.gz
+OLD_FILES+=usr/share/misc/windrv_stub.c
+
 # 20210116: if_wl_wavelan.h removed
 .if ${TARGET_ARCH} == "i386"
 OLD_FILES+=usr/include/machine/if_wl_wavelan.h

share/man/man4/Makefile

@@ -325,7 +325,6 @@ MAN=	aac.4 \
 	mx25l.4 \
 	mxge.4 \
 	my.4 \
-	${_ndis.4} \
 	net80211.4 \
 	netdump.4 \
 	netfpga10g_nf10bmac.4 \
@@ -715,7 +714,6 @@ MLINKS+=msk.4 if_msk.4
 MLINKS+=mwl.4 if_mwl.4
 MLINKS+=mxge.4 if_mxge.4
 MLINKS+=my.4 if_my.4
-MLINKS+=${_ndis.4} ${_if_ndis.4}
 MLINKS+=netfpga10g_nf10bmac.4 if_nf10bmac.4
 MLINKS+=netintro.4 net.4 \
 	netintro.4 networking.4
@@ -815,7 +813,6 @@ _hwpstate_intel.4=	hwpstate_intel.4
 _i8254.4=	i8254.4
 _ichwd.4=	ichwd.4
 _if_bxe.4=	if_bxe.4
-_if_ndis.4=	if_ndis.4
 _if_nfe.4=	if_nfe.4
 _if_urtw.4=	if_urtw.4
 _if_vmx.4=	if_vmx.4
@@ -826,7 +823,6 @@ _io.4=		io.4
 _itwd.4=	itwd.4
 _linux.4=	linux.4
 _nda.4=		nda.4
-_ndis.4=	ndis.4
 _nfe.4=		nfe.4
 _nfsmb.4=	nfsmb.4
 _if_ntb.4=	if_ntb.4