If you have some application in your iPhone or iPod touch that you don’t need any more you can delete those apps from iPhone or iPod touch easily. Follow this guide to delete apps from iPhone or iPod Touch.
See how to delete apps form Apple iPhone or iPod Touch
Locate the app that you want to delete from iPhone or iPod touch
Tap the application icon and hold for a while, application icons will start wiggle and you will get a small (x) icon on each application installed from app store.
Simply Tap that (x) icon and this will prompt to confirm deletion, tap the Delete button to confirm.
You can see Skype application you have deleted is no longer available on Sprinboard
NOTE: There are some default applications in your iPhone and iPod touch that you can’t delete like Maps, Stocks, Safari, Weather etc.