Fixes a minor error in README.md

There was an error in the configuration required to run MySQL test
from Eclipse.

README.md

@@ -335,14 +335,12 @@ This configuration will run with the **H2** database. If you wish to run the
 tests with the **MySQL** database, you have to add to additional system
 configuration:
 * `mysql.version`: The version of the MySQL driver (currently, `8.0.21`).
-* `arquillian.launch`: This system property is used to change the profile used
-by Arquillian. It should be `wildfly-embedded-mysql` to use the MySQL profile.
 
 Therefore, the `VM arguments` configuration for running the tests in Eclipse
 using the MySQL database is:
 
 ```
--Darquillian.launch=wildfly-embedded-mysql
+-Darquillian.launch=wildfly-embedded
 -Dmysql.version=8.0.21
 -Dwildfly.version=10.1.0.Final
 -Dwildfly.jbossHome=target/wildfly-10.1.0.Final