I've tried without success to stop the daily inventory collection of all nodes within LMS 2.6.
I have my RME inventory collection set to monthly and polling set to weekly (under Admin > Inventory > System Job Schedule > ).
I've tried stopping the next scheduled job, purging jobs and restarting services, but it doesnt seem to work. I can no longer find the "parent" job ID, but the daily iteration keeps coming up (now up to 1001.339).
You should be able to delete this 1001 job from jobcli:
NMSROOT/bin/cwjava -cw NMSROOT com.cisco.nm.cmf.jrm.jobcli
At the prompt type: