chore: update sponsors

Author: sleeyax

README.md

@@ -24,8 +24,6 @@ Then, follow the steps to build the project:
 Maintenance of this project is made possible by all the contributors and sponsors.
 If you'd like to sponsor this project and have your avatar or company logo appear below click [here](https://github.com/sponsors/sleeyax). 💖
 
-<a href="https://github.com/secretkeysio"><img src="https://github.com/secretkeysio.png" width="60px" alt="SecretKeys" /></a>
-
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