Remove a redundant line in the CHANGELOG. [skip ci]

Author: andersio

CHANGELOG.md

@@ -8,8 +8,6 @@
 
 1. New method ``retry(upTo:interval:on:)``. This delays retrying on failure by `interval` until hitting the `upTo` limitation.
 
-1. Addressed the exceptionally high build time. (#495)
-
 # 2.0.0
 # 2.0.0-rc.3
 1. `Lifetime.+=` which ties a `Disposable` to a `Lifetime`, is now part of the public API and is no longer deprecated.