Delete CORS notice in README

PR LemmyNet/lemmy#3421 is merged!

README.md

@@ -8,21 +8,6 @@
   <img src=".github/screenshot3.png" width="600px" />
 </div>
 
-## **Hey!!**
-
-**Please upvote these issues on the Lemmy repo!**
-
-- [#3109: CORS support for external web clients?](https://github.com/LemmyNet/lemmy/issues/3109)
-- [#3301: Allow cross-origin requests](https://github.com/LemmyNet/lemmy/pull/3301)
-
-Without these issues being resolved, Slemmy **will not work** with Lemmy v0.18+!
-If you want to use Slemmy, show your support for these issues!
-
-> **Note**: A workaround that I can potentially implement is to use a proxy
-> server to bypass CORS. This is what other web clients do. However, it has
-> numerous security implications and would require maintenance on my part.
-> This is a Lemmy issue, so please upvote the issues above!
-
 ## Features
 
 - [x] WS support