Cleanup the release notes (#160)

Author: kezhenxu94

CHANGELOG.md

@@ -10,18 +10,15 @@
     - Support ignoring traces by http method (#143)
     - `NoopSpan` on queue full, propagation downstream (#141)
     - Support agent namespace. (#126)
-    - Added `grpc.max_connection_age_grace_ms` (#130)
     - Support secure connection option for GRPC and HTTP (#134)
 
 - Plugins:
     - Add Falcon Plugin (#146)
     - Update `sw_pymongo.py` to be compatible with cluster mode (#150)
     - Add Python celery plugin (#125)
     - Support tornado5+ and tornado6+ (#119)
-    - Add psycopg plugin (#122)
 
 - Fixes:
-    - Now properly removes HTTP basic auth credentials from segments and logs (#152)
     - Remove HTTP basic auth credentials from log, stacktrace, segment (#152)
     - Fix `@trace` decorator not work (#136)
     - Fix grpc disconnect, add `SW_AGENT_MAX_BUFFER_SIZE` to control buffer queue size (#138)