You can easily remove any of these icons you don't need.

There’s nothing in each one’s menu to allow you to remove them and there aren’t easy to find settings for them in System Preferences (though, they are usually scattered around there). If you want to remove one, just hold down the ⌘ (Command) key and drag it out of the menu bar. Lift your finger to stop dragging once you’re clear of the menu bar and poof it’s gone. This is similar to how you can drag icons out of your Dock  – only with that you don’t need to hold down the option key.