Remove the org.jboss.as.test.integration.logging.syslogserver package from testsuite/shared

I believe the org.jboss.as.test.integration.logging.syslogserver package is unused and can be deleted, along with any then unused dependency entries in the testsuite/shared pom.

See https://github.com/wildfly/wildfly/pull/16644#pullrequestreview-1355317342