How to remove extra iphone backup files

To Remove your backfile from Itunes (PC version) :

1. Open up Itunes
2. Go to edit, click on "Preferences" or use short cut key Ctrl+,

3. That will open up the Prefernce Menu

4. Click on Devices

5. You will see a list of backup files. Highlight the ones that you would like to remove (usually older files) and click Delete Backup