remove <triggerhappy> since it went upstream

utils/triggerhappy/files/triggerhappy.hotplug

@@ -1,15 +0,0 @@
-#!/bin/sh
-THD_SOCKET=/tmp/triggerhappy.socket
-[ -S "$THD_SOCKET" ] || exit
-
-case "$ACTION" in
-	add)
-		DEVICE="/dev/$DEVNAME"
-		[ -c "$DEVICE" ] || exit
-		# offer device to triggerhappy daemon
-		/usr/sbin/th-cmd --socket "$THD_SOCKET" --add "$DEVICE"
-	;;
-        remove)
-		# nothing to do
-	;;
-esac