Remove info about old versions

[elharo]

Java 1.8 is now minimum, not Java 1.6.

[elharo]

Looks like the CI is a little borked. JDK 8 is not available:

Installed distributions
Trying to resolve the latest version from remote
Error: Could not find satisfied version for SemVer '8'.
Available versions: 22.0.1+8, 22.0.0+36, 21.0.3+9.0.LTS, 21.0.2+13.0.LTS, 21.0.1+12.0.LTS, 21.0.0+35.0.LTS, 20.0.2+9, 20.0.1+9, 20.0.0+36, 19.0.2+7, 19.0.1+10, 19.0.0+36, 18.0.2+101, 18.0.2+9, 18.0.1+10, 18.0.0+36, 17.0.11+9, 17.0.10+7, 17.0.9+9, 17.0.8+101, 17.0.8+7, 17.0.7+7, 17.0.6+10, 17.0.5+8, 17.0.4+101, 17.0.4+8, 17.0.3+7, 17.0.2+8, 17.0.1+12, 17.0.0+35, 11.0.23+9, 11.0.22+7.1, 11.0.22+7, 11.0.21+9, 11.0.20+101, 11.0.20+8, 11.0.19+7, 11.0.18+10, 11.0.17+8, 11.0.16+101, 11.0.16+8, 11.0.15+10

[slawekjaranowski]

@elharo please look #238

Some of JDK are not supported on new macos 14 with M processors