fix: remove kafka 4 incompatible message from readme (#165)

Signed-off-by: Joel Hanson <[email protected]>

Author: Joel-hanson

README.md

@@ -6,8 +6,6 @@ The connector is supplied as source code which you can easily build into a JAR f
 
 **Note**: A sink connector for IBM MQ is also available on [GitHub](https://github.com/ibm-messaging/kafka-connect-mq-sink).
 
-**Kafka version support**: This connector supports Kafka versions upto 3.9. It is not compatible with Kafka 4.x.
-
 ## Contents
 
 - [Building the connector](#building-the-connector)