Eliminate devices from my account
I Have a total of 4 devices on my Apple ID. I would like to know how to remove two of them.
iPhone 4S, iOS 7.1.2, Also have an iPad
They are on your account in what way ? If they are associated to your account then you can log into your account on your computer's iTunes via the Store > View Account menu option and remove the association (assuming that they've been associated for 90+ days) : iTunes Store: Associating a device or computer to your Apple ID
If you want to log them out of your account then you will need to do so directly on them by tapping on your id in Settings > iTunes & App Store