Remove Relequestual from funding links

Author: Relequestual

.github/FUNDING.yml

@@ -1,9 +1,8 @@
 # These are supported funding model platforms
 
-github: [relequestual] # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
+github: [] # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
 patreon: # Replace with a single Patreon username
 open_collective: json-schema
-ko_fi: relequestual
+ko_fi: # Single username
 tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
 community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
-custom: https://buymeacoffee.com/relequestual