The Canada Revenue Agency, the Canadian Food Inspection Agency, and the Parks Canada agency all had this particular requirement in their legislation when they were set up to have the AG assess their internal performance reporting. It was felt at the time that as they were new agencies, this would help them establish appropriate practices in that regard.
These agencies have been established for some time now, and the need to assess the nature of performance reporting is no longer necessary. It's not something that is done for any other federal agency. This is why it was decided to discontinue this particular practice.