Prepare for release v1.11.0

Signed-off-by: Sahas Subramanian <sahas.subramanian@proton.me>

Author: shsms

RELEASE_NOTES.md

@@ -1,9 +1,5 @@
 # Frequenz channels Release Notes
 
-## Summary
-
-<!-- Here goes a general summary of what this release is about -->
-
 ## Upgrading
 
 - `LatestValueCache` now closes the receiver when it is stopped.
@@ -14,7 +10,3 @@
 - There's a new `Oneshot` channel, which returns a sender and a receiver.  A single message can be sent using the sender, after which it will be closed.  And the receiver will close as soon as the message is received.
 
 - `Sender`s now have an `aclose`, which must be called, when they are no-longer needed.
-
-## Bug Fixes
-
-<!-- Here goes notable bug fixes that are worth a special mention or explanation -->