chore: adjust funding

Author: mrdav30

.github/FUNDING.yml

@@ -1,12 +1,5 @@
 # These are supported funding model platforms
 
 github: mrdav30
-patreon: mrdav30
-open_collective: # Replace with a single Open Collective username
 ko_fi: mrdav30
-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
-liberapay: # Replace with a single Liberapay username
-issuehunt: # Replace with a single IssueHunt username
-otechie: # Replace with a single Otechie username
-custom: # Replace with a single custom sponsorship URL
+buy_me_a_coffee: mrdav30