docs: Remove redundant section in CHNAGELOG and README

Author: Longbridge Dev

CHANGELOG.md

@@ -5,8 +5,6 @@ All notable changes to this project are documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
-
 ## [0.1.0] — Initial beta release
 
 Initial public beta. The SDK implements the Longbridge OpenAPI binary protocol

README.md

@@ -640,7 +640,3 @@ cp deps/openapi_protobuf_specs/trade/*.proto   protos/
 ```
 
 Don't hand-edit files under `protos/` — the next sync will clobber your changes.
-
-## License
-
-TBD. See the LICENSE file once one is added.