completion: use __gitcomp_builtin in _git_rm

No new completable options!

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/rm.c

@@ -242,7 +242,7 @@ static struct option builtin_rm_options[] = {
 	OPT__DRY_RUN(&show_only, N_("dry run")),
 	OPT__QUIET(&quiet, N_("do not list removed files")),
 	OPT_BOOL( 0 , "cached",         &index_only, N_("only remove from the index")),
-	OPT__FORCE(&force, N_("override the up-to-date check"), 0),
+	OPT__FORCE(&force, N_("override the up-to-date check"), PARSE_OPT_NOCOMPLETE),
 	OPT_BOOL('r', NULL,             &recursive,  N_("allow recursive removal")),
 	OPT_BOOL( 0 , "ignore-unmatch", &ignore_unmatch,
 				N_("exit with a zero status even if nothing matched")),

contrib/completion/git-completion.bash

@@ -2715,7 +2715,7 @@ _git_rm ()
 {
 	case "$cur" in
 	--*)
-		__gitcomp "--cached --dry-run --ignore-unmatch --quiet"
+		__gitcomp_builtin rm
 		return
 		;;
 	esac