timelearn: Fix comment
timelearn: Fix comment

Summary: Remove part of a doc comment describing a change that has now been made.

Test Plan: Just a doc change, view docs.

Reviewers: d3zd3z

Reviewed By: d3zd3z

Differential Revision: https://davidb.phacility.com/D3

d3zd3z/stenome,d3zd3z/stenome