please report back and tell us if there are any ill effects from your deletions....
I read that deleting the tts.apk can cause force closes while using gps, so I'll load that back into my phone tomorrow and hopefully the whistle won't return. ...
Bunch of 12 year olds in this thread, and I'm not just talking about the OP.
I got the whistle after receiving a phone call. Deleted voice dial.apk, picotts.apk, and tts.apk. Whistle is no more.