Remove info about firewall ports as urls are all broken

README.md

@@ -17,23 +17,6 @@ The pyEGA3 download client is a python-based tool for viewing and downloading fi
 
 * Python 3.6 or newer. ([download instructions](https://www.python.org/downloads/))
 
-### Firewall ports
-
-pyEGA3 makes https calls to the EGA AAI and the EGA Data API (both in https://ega.ebi.ac.uk:8443). Port 8443 must be reachable from the location where pyEGA3 is executed to avoid timeouts.
-
-For Linux/Mac users, check if port 8443 is open by running the following commands:
-
-```bash
-openssl s_client -connect ega.ebi.ac.uk:8443
-```
-
-If the port is open, the commands should print `CONNECTED` to the terminal.
-
-For Windows users, check if port 8443 is open by going to the following URLs:
-* https://ega.ebi.ac.uk:8443/ega-openid-connect-server/
-
-If the port is open, both of the sites should load with no timeouts.
-
 ## Installation and update
 
 ### Using Pip3