Google Photos will stop syncing to Drive on July 10, 2019

This means that when they upload a file to Photos, it’s automatically uploaded to the Google Photos folder in Drive. It won’t go away; it will just stop syncing with Photos.Unlike consumers, G Suite users do not have the option to show photos from My Drive in Google Photos. If Google Photos is disabled in your organization, your users will not be impacted.See our post on the Keyword for more details.

Source: gsuiteupdates.googleblog.com