Google search bar can be removed from the home screen by disabling the Google Search app. As far as Facetime goes, I don't think any non-Apple product works with FaceTime.
You need to go to Settings (app) -> Apps -> All -> Google Search -> Disable.I go in the app and then settings but I don't see the option of removing it from my homescreen.
You need to go to Settings (app) -> Apps -> All -> Google Search -> Disable.