How many Google API's do you need?

Hello. I have a question regarding Google APIs because reading from a post that You need 7 APIs :
Google Cloud Messaging for Android
Google Cloud Pub/Sub
Google Cloud User Accounts
Google Play Android Developer API
Google Play Game Management
Google Play Game Services
Google+ API

But when I check in my Google API profile after adding those I see more stuff. Shown in the pic. Should I disable all those.? Or they must be there. Thank you!!!