fix: remove genius icon

assets/external/README.md

@@ -2,5 +2,4 @@
 I do not own any of the assets in this folder.  
 They belong to their respective owners and I am only re-hosting them to ensure availability and stability:
 - The GitHub logo is owned by GitHub Inc.
-- The Genius logo is owned by Genius Media Group Inc.
 - The GreasyFork logo is owned by Jason Barnabe.