docs: remove phoenix-server from contributors list

Author: chappie-daemon

README.md

@@ -658,7 +658,6 @@ I'm Cameri on most social networks. You can find me on Nostr by npub1qqqqqqyz0la
 - Kushagra Kinra
 - Mahmoud Khedr
 - Mohit Davar
-- phoenix-server
 - Radosvet Petrov
 - Sagar
 - Saniddhya Dubey