How many of the 45 different control-panel items do you actually use? Most likely less than half of them, at least for me. But what baffles me more is the fact that there's loading time; and the more icons you have, the more loading time there is before you actually get to access the Control Panel properly. Thankfully, each individual icon can be removed with the Group Policy Editor.
1) Access your Group Policy Editor: Start > type gpedit.msc in the Search Bar
2) Access the Control Panel options: User Configuration > Administrative Templates > Control Panel > Hide Specified Control Panel Items / Show Specified Control Panel Items
3) Enable the feature
4) Add the name of the item you wish to hide or show: Click on Show, then Add the names of the icons you wish to hide or show. You must enter it exactly the way it is shown in the Control Panel (case-sensitive.)
5) Click Apply and OK. No reboot required.
I've always wondered why the control panel has load time. If anybody knows, please leave a comment.