Can I disable horn (beep) that confirms remote locking?

I love my 2007 Elantra! It is a great car but I do not like the horn beep that confirms I locked my car (remotely).
 
My neighbors can tell when I get in ("so, you got home at 3:00 last night..."). It is annoying to me.  This is programmable in other cars I know but haven't found anything in the manual. Any suggestions?
 
Thanks,
Jeff