Remove design discussion survey badge (#2976)

Removed survey badge from README.

Author: ronniegeraghty

README.md

@@ -1,7 +1,5 @@
 # Azure SDK for Rust
 
-[![Take Our Design Discussion Survey](https://img.shields.io/badge/Take%20Our%20Design%20Discussion%20Survey-008000?style=flat&link=https://www.surveymonkey.com/r/repo-badge)](https://www.surveymonkey.com/r/repo-badge)
-
 This repository is for the active development of the Azure SDK for Rust.
 
 ## Crates 📦