docs: drop warning

Author: lewisakura

README.md

@@ -45,10 +45,6 @@ When in doubt, please use the docker setup.
 
 Alongisde the Vencloud setup, you will also have to setup Redis. This will not be covered here, please refer to the Redis documentation.
 
-> [!WARNING]
-> At the current moment, Go 21 is not yet supported, you'll need Go 20!
-> An easy way to get Go 20 is to run `go install golang.org/dl/go1.20.0@latest` and then use the `go1.20` command instead of `go`
-
 1. Install the [Go programming language](https://go.dev/dl/)
 2. Build the code: `go build -o backend`
 3. Start the server: