Remove Support Ukraine banner from Ax README (facebook#5027)

Summary:

Remove the Support Ukraine banner badge from the Ax open source project README file.

Reviewed By: CamiWilliams

Differential Revision: D96484189

Author: dmitryvinn-fb

README.md

@@ -2,7 +2,6 @@
 
 <hr/>
 
-[![Support Ukraine](https://img.shields.io/badge/Support-Ukraine-FFD500?style=flat&labelColor=005BBB)](https://opensource.fb.com/support-ukraine)
 [![Build Status](https://img.shields.io/pypi/v/ax-platform.svg)](https://pypi.org/project/ax-platform/)
 [![Build Status](https://img.shields.io/pypi/pyversions/ax-platform.svg)](https://pypi.org/project/ax-platform/)
 [![Build Status](https://img.shields.io/pypi/wheel/ax-platform.svg)](https://pypi.org/project/ax-platform/)