chore: remove non-required entries from CHANGELOG.md

Author: DASPRiD

CHANGELOG.md

@@ -1,15 +1,7 @@
 # Changelog
 
 All notable changes to this project will be documented in this file, in reverse chronological order by release.
-
-## 3.0.0 - 2022-03-14
-
-### Changed
-
-- Add strong php Types
-- Fix spelling of DEFAULT_BYTE_MODE_ENCODING => DEFAULT_BYTE_MODE_ENCODING
-- Constructor names of BlockPair
-- Drop support for PHP < 8.1
+This file is automatically maintained by release-please.
 
 ## 2.0.7 - 2022-03-14