update_autogen: Remove unused -H flag

We now update ChangeLog files only when preparing a new release, so
this flag is never used.  Keeping it risks confusing more than it
helps.
* admin/update_autogen: Remove the -H flag as it is no longer used.

admin/update_autogen

@@ -63,7 +63,6 @@ Options:
     commit them (caution).
 -q: be quiet; only give error messages, not status messages.
 -A: only update autotools files, copying into specified dir.
--H: also update ChangeLog.${changelog_n}
 -L: also update ldefs-boot.el.
 -C: start from a clean state.  Slower, but more correct.
 EOF
@@ -80,13 +79,10 @@ clean=
 autogendir=                     # was "autogen"
 ldefs_flag=1
 lboot_flag=
-changelog_flag=
 
 ## Parameters.
 ldefs_in=lisp/loaddefs.el
 ldefs_out=lisp/ldefs-boot.el
-changelog_n=$(sed -n 's/CHANGELOG_HISTORY_INDEX_MAX *= *//p' Makefile.in)
-changelog_files="ChangeLog.$changelog_n"
 sources="configure.ac lib/Makefile.am"
 ## Files to copy into autogendir.
 ## Everything:
@@ -109,7 +105,7 @@ tempfile=/tmp/$PN.$$
 trap "rm -f $tempfile 2> /dev/null" EXIT
 
 
-while getopts ":hcfqA:HCL" option ; do
+while getopts ":hcfqA:CL" option ; do
     case $option in
         (h) usage ;;
 
@@ -125,8 +121,6 @@ while getopts ":hcfqA:HCL" option ; do
 
         (C) clean=1 ;;
 
-        (H) changelog_flag=1 ;;
-
         (L) lboot_flag=1 ;;
 
         (\?) die "Bad option -$OPTARG" ;;
@@ -321,14 +315,6 @@ modified=$(status $genfiles $ldefs_out $grammar_out) || die
 commit "loaddefs" $modified || die "commit error"
 
 
-## Less important than the other stuff, so do it last.
-[ ! "$changelog_flag" ] || {
-    make change-history-nocommit || die "make change-history error"
-    modified=$(status $changelog_files) || die
-    commit "ChangeLog" $modified || die "commit error"
-}
-
-
 exit 0
 
 ### update_autogen ends here