fixed CHANGELOG

Signed-off-by: Caleb Metz <[email protected]>

Author: cmetz100

Diff for: CHANGELOG.md

@@ -20,11 +20,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 - Fixes bugs in `smaps` parsing code that can result in under-counting RSS in
   the smaps view of the data.
-### Added
-- Retrieve memory, CPU information from cgroup controller for every pid observed on Linux.
-
-## [0.22.0-rc1]
-### Fixed
 - Target observer was not exposed through CLI.
 ### Changed
 - Now built using rust 1.79.0