fix: remove readme notice

Author: DogeDark

README.md

@@ -1,9 +1,3 @@
-> [!NOTE]
-> This crate is no longer updated as it has been moved from `dioxus-std` to `dioxus-sdk` as of April 4th, 2024.
-
-<br/>
-<br/>
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 <div align="center">
   <h1>🧰 Dioxus Development Kit 🚀</h1>
   <p><strong>A platform agnostic library for supercharging your productivity with Dioxus.</strong></p>