Prepare for release v1.0.0-rc2102 (#1297)

Author: shsms

RELEASE_NOTES.md

@@ -1,17 +1,5 @@
 # Frequenz Python SDK Release Notes
 
-## Summary
-
-<!-- Here goes a general summary of what this release is about -->
-
-## Upgrading
-
-<!-- Here goes notes on how to upgrade from previous versions, including deprecations and what they should be replaced with -->
-
-## New Features
-
-<!-- Here goes the main new features and examples or instructions on how to use them -->
-
 ## Bug Fixes
 
 - The log level for when components are transitioning to a `WORKING` state is lowered to `INFO`, and the log message has been improved.