Clear ext release notes (#3184)

Author: satvu

extensions/Worker.Extensions.Kafka/release_notes.md

@@ -4,7 +4,6 @@
 - My change description (#PR/#issue)
 -->
 
-### Microsoft.Azure.Functions.Worker.Extensions.Kafka 4.1.3
+### Microsoft.Azure.Functions.Worker.Extensions.Kafka <version>
 
-- Fix key avro serialization and deserialization when schema registry URL is provided [(PR Link)](https://github.com/Azure/azure-functions-kafka-extension/pull/569)
-- Fix null reference error when using avro deserialization [(PR Link)](https://github.com/Azure/azure-functions-kafka-extension/pull/594)
+- <entry>

extensions/Worker.Extensions.ServiceBus/release_notes.md

@@ -4,11 +4,6 @@
 - My change description (#PR/#issue)
 -->
 
-### Microsoft.Azure.Functions.Worker.Extensions.ServiceBus 5.24.0
+### Microsoft.Azure.Functions.Worker.Extensions.ServiceBus <version>
 
-- Update minor dependencies
-    - Azure.Identity to 1.16.0
-    - Azure.Messaging.ServiceBus to 7.20.1
-    - Microsoft.Extensions.Azure to 1.13.0
-    - Google.Protobuf to 3.32.1
-    - Grpc.Tools to 2.72.0
+- <entry>