Yes,
just visit device "settings",
and look for "accounts".
In accounts you can add and remove accounts to and from the device very easily.
Don't worry about the trashed icons from the main screen because they are just that, icons and widgets.
You can bring any app from the app menu to the home screen by pressing your finger on top of the selected app.
And thrash it if you don't need it anymore but the app will remain intact in the app menu anyway.
To completely delete and remove any app from the phone, you need to uninstall the app.
You are just removing accounts,
And not deleting the apps.
I hope all works fine for you
Good luck
Sent from my GT-I8160