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Quartz delete/unschedule a job at runtime

I had a requirement to remove a quartz job from a tomcat without restarting it. So best solution is to write a jsp to do this. I had earlier written a Quartz Admin jsp blog so I went and added a Delete button to that jsp and it appears all I need to do is call
<%
    if("Delete".equals(btnInterrupt)) {
         scheduler.deleteJob(jobNameToRun, groupNameToRun);
%>
    Job <%=jobNameToRun%> Deleted.

<%
    }
%>

There is a unschedule  api also but that will only unschedule the job's next execution and I wanted to remove the job.  When tomcat is restarted the job will come back.

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