Remove Java CI badge from README

Removed the Java CI badge from the README.

Author: lemire

README.md

@@ -1,6 +1,5 @@
 JavaEWAH
 ==========================================================
-[![Java CI](https://github.com/lemire/javaewah/actions/workflows/basic.yml/badge.svg)](https://github.com/lemire/javaewah/actions/workflows/basic.yml)
 [![][maven img]][maven]
 [![][license img]][license]
 [![docs-badge][]][docs]