The change was made in Threshold 2 update
The Windows 10 service responsible for collecting data and error information has been renamed in Threshold 2, but given the fact that Microsoft hasn't publicly announced the change, some are tempted to believe that the company has actually removed it completely.
Basically, the original name of the service in Windows 10 was Diagnostics Tracking Service (DiagTrack), and privacy-obsessed users who wanted to block any type of data from being sent to Microsoft disabled it completely after the debut of the RTM version in late July.
In fact, applications whose purpose was to block Windows 10 from phoning home also disabled this service, as it was one of the main ways for Microsoft to get bug and crash information from computers running the new OS.
So when Threshold 2 was released and the service was no longer there, many believed that Microsoft changed its mind and decided not to collect information from users' computers anymore.