1) go to itunes
2) click applications
3) right click on the application you want to use
4) press show in windows explorer
5) Copy the ipa to desktop
6) right click and press open with (open file with winrar, winzip, what ever, something so you can see all the files)
7) Open using WordPad or plist editor
Click Ctrl + F and search for "itemId"
9) Delete the number under "itemId" in between integer
10) leave first number remaining
11) save
12) double click your new ipa
13) sync
14) No more update badge