jvmfwk: Removes the checking for W98 in JREProperties.java

Change-Id: Ia5be6b5893abef084b5e4203f9f02919289ce055
Reviewed-on: https://gerrit.libreoffice.org/11054
Reviewed-by: David Tardon <dtardon@redhat.com>
Tested-by: David Tardon <dtardon@redhat.com>