configure: remove confusing file manipulation

The configure script had some code to manipulate config-host.ld~ (i.e.,
a common backup filename), comparing it with the newly-generated file.
I believe the sense of the comparison was backwards.

Since it seemed to serve little purpose anyway, remove it to avoid any
confusion.

Signed-off-by: Ed Maste <emaste@freebsd.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

configure

@@ -4104,17 +4104,8 @@ if test "$gcov" = "yes" ; then
 fi
 
 # generate list of library paths for linker script
-
 $ld --verbose -v 2> /dev/null | grep SEARCH_DIR > ${config_host_ld}
 
-if test -f ${config_host_ld}~ ; then
-  if cmp -s $config_host_ld ${config_host_ld}~ ; then
-    mv ${config_host_ld}~ $config_host_ld
-  else
-    rm ${config_host_ld}~
-  fi
-fi
-
 # use included Linux headers
 if test "$linux" = "yes" ; then
   mkdir -p linux-headers