Reimplement logic to find Java version in JavaVersion.java

We should remove the version check altogether and update the logic of figuring out various Java versions in [JavaVersion.java](https://github.com/adoptium/STF/blob/master/stf.core/src/stf.core/net/adoptopenjdk/stf/environment/JavaVersion.java) to depend on Java system properties instead of parsing java -version output.

Start with stf.core/src/stf.core/net/adoptopenjdk/stf/environment/JavaVersion.java and trace the current version check and java -version parsing. Identify the Java system properties that should provide the supported version information. Done means the version check is removed and Java version detection uses system properties instead of parsing command output.

Written by the indexing model from the issue text.