automoji: fix max limiting

We were setting max by passing it to es.all *and* here.  This meant that
if we requested a max of 1 but *also* had a required emoji (like we
often do with 🎰) the required emoji ends up taking up a slot, and in
fact ends up not required.  Now required emoji effectively do not end up
counting against our max.

internal/tool/automoji/automoji.go

@@ -137,7 +137,7 @@ func react(s *discordgo.Session, channelID, messageID string, es *emojiSet) {
 	reactTotal.WithLabelValues(strconv.Itoa(max)).Inc()
 	for i, e := range es.all(max) {
 		// the 20 here is to limit to possibly fewer than were returned
-		if i == max || i == 20 {
+		if i == 20 {
 			break
 		}
 		if err := s.MessageReactionAdd(channelID, messageID, e); err != nil {