geom_map and geom_redboot: Remove unused ctlreq handler.

[delphij]

Summary

The two classes do not take any verbs and always gctl_error for
all requests, so don't bother to provide a ctlreq handler.

[mav]

Looks good to me, thhough I don't know these classes to guess what use they may possibly have for this methog.

head/sys/geom/geom_map.c

 # $FreeBSD$
 
 PACKAGE=geom
 PROG=   gbde
 SRCS=   gbde.c template.c
 SRCS+=  rijndael-alg-fst.c
 SRCS+=  rijndael-api-fst.c
-SRCS+=  sha512c.c
 SRCS+=  g_bde_lock.c
 
 # rijndael-fst.c does evil casting things which can results in warnings,
 # the test-vectors check out however, so it works right.
 NO_WCAST_ALIGN=
 NO_WMISSING_VARIABLE_DECLARATIONS=
 
 CFLAGS+= -I${SRCTOP}/sys

head/sys/geom/geom_redboot.c

 # $FreeBSD$
 
 PACKAGE=geom
 PROG=   gbde
 SRCS=   gbde.c template.c
 SRCS+=  rijndael-alg-fst.c
 SRCS+=  rijndael-api-fst.c
-SRCS+=  sha512c.c
 SRCS+=  g_bde_lock.c
 
 # rijndael-fst.c does evil casting things which can results in warnings,
 # the test-vectors check out however, so it works right.
 NO_WCAST_ALIGN=
 NO_WMISSING_VARIABLE_DECLARATIONS=
 
 CFLAGS+= -I${SRCTOP}/sys