chore: remove CI flag from README

Author: rohanku

README.md

@@ -1,6 +1,5 @@
 # Argon
 
-[![ci](https://github.com/ucb-substrate/argon/actions/workflows/ci.yml/badge.svg)](https://github.com/ucb-substrate/argon/actions/workflows/ci.yml)
 [![License](https://img.shields.io/badge/License-BSD_3--Clause-blue.svg)](https://opensource.org/licenses/BSD-3-Clause)
 
 Argon is a programming language for writing constraint-based integrated circuit layout generators.