Do I Have to Notify College?

Earlier this semester, I made the decision to switch gym classes from a weightlifting-based class to individual sports. They will show up on my transcript as different classes. I made this change after having got in early action, so I don’t think the school would know about it. Am I obligated to notfiy the school about this non-academic change in schedule, or would I be wasting their time? Also, would it be problematic to notify them now, in April, when the change occurred in January?

They will not care at all.

what @VickiSoCal said.