Merge pull request #117 from free5gc/docs-remove-vagrant

Remove deprecated vagrant deployment option

README.md

@@ -146,11 +146,6 @@ You can check this [issue](https://github.com/free5gc/free5gc-compose/issues/94)
 
 Here you can find helpful guidelines on the integration of Nginx reverse proxy to set it in front of the WebUI: https://github.com/free5gc/free5gc-compose/issues/55#issuecomment-1146648600
 
-## Vagrant Box Option
-
-For Linux kernel version below 5.4 you can setup a working environment using a vagrant box: https://github.com/abousselmi/vagrant-free5gc
-Please refer to [GTP5G kernel module](https://github.com/free5gc/gtp5g) for more information.
-
 ## ULCL Configuration 
 To start the core with a i-UPF and two PSA UPFs ULCL configuration, use