docs: remove graphql conf 2024 banner (#578)

README.md

@@ -1,12 +1,7 @@
-[![GraphQLConf 2024 Banner: September 10-12, San Francisco. Hosted by the GraphQL Foundation](https://github.com/user-attachments/assets/bdb8cd5d-5186-4ece-b06b-b00a499b7868)](https://graphql.org/conf/2024/?utm_source=github&utm_medium=graphql_ws&utm_campaign=readme)
-
 <div align="center">
   <br />
 
-  <h3>graphql-ws</h3>
-
-<!-- Uncomment when we remove GraphQL Conf banner -->
-<!-- ![GraphQLOverWebSocket](https://user-images.githubusercontent.com/25294569/94527042-172dba00-023f-11eb-944b-88c0bd58a8d2.gif) -->
+![GraphQLOverWebSocket](https://user-images.githubusercontent.com/25294569/94527042-172dba00-023f-11eb-944b-88c0bd58a8d2.gif)
 
   <h6>Coherent, zero-dependency, lazy, simple, <a href="PROTOCOL.md">GraphQL over WebSocket Protocol</a> compliant server and client.</h6>