Remove the unused 'connector' parameter in the createSourceTask method in EmbeddedEngine.java

private SourceTask createSourceTask(final SourceConnector connector, final List<Map<String, String>> taskConfigs, final Class<? extends Task> taskClass)
        throws EmbeddedEngineRuntimeException, NoSuchMethodException, InvocationTargetException {
    if (taskConfigs.isEmpty()) {
        String msg = "Unable to start connector's task class '" + taskClass.getName() + "' with no task configuration";
        failAndThrow(msg, null);
    }

    SourceTask task = null;
    try {
        task = (SourceTask) taskClass.getDeclaredConstructor().newInstance();
    }
    catch (IllegalAccessException | InstantiationException t) {
        failAndThrow("Unable to instantiate connector's task class '" + taskClass.getName() + "'", t);
    }
    return task;
}