I am not particularly bothered about unused stock apps on my iPhone but that's only because I didn't know there was a way to get them removed without jailbreaking. You know there are these apps that I don't use at all: Calendar, Notes, Reminders, Newsstand, Weather etc. I have cool third-party apps for those purposes and so, these icons are plainly useless on the home-screen.
So when you find yourself in that spot where you want them removed but don't want to jailbreak your iPhone, you can use this method.
Here is How to Remove Stock iOS Apps on iPhone or iPad Without Jailbreaking:
Step 1: On your iPhone, open Safari
Step 2: Navigate to ‘http://www.cydiahacks.com/hide.html‘
Step 4: If you want to hide the Clock app, you tap on ‘Hide Clock‘. For our example, I've chosen to hide the Clock app (So, ‘Hide Clock‘)
Step 7: A new icon will replace the stock Clock icon on the iPhone (be aware that this is just icon replacement. The app is not uninstalled at all.)
Clock icon is removed from your home screen.
How to Get Removed iOS Stock App Icon Back!
Just reboot your iPhone and the stock icon comes right back up.
This simple method works on almost all the iOS 5 devices.
Below is a video demonstrating how to remove Stock Apps Icons on iPhone / iPad: