protected void deleteJobRegistry(String jobName) {
		jdbcTemplate.update(DELETE_JOB_REGISTRY, jobName);
		jdbcTemplate.update(DELETE_STEP_NAMES, jobName);
	}
Delete the job entry from the registry table.
This will delete job registry and the associated step names entries
for the given job name.

@param jobName the job name.
spring-xd-dirt/src/main/java/org/springframework/xd/dirt/plugins/job/DistributedJobLocator.java