You can change or delete the attributes of projects, sub-projects, run definitions and tasks provided that you have not yet started a run and therefore no log exists.
Once you have executed a run, you can only change the description.
If you delete an object any dependent elements are also deleted. You cannot delete elements if a run has not ended.
Pls reward points if helpful
Hi go to LSMW transaction and select the below path
GOTO->Administration or click Cntrl+F1.
you will be taken to th list fo LSMWs . then find your LSMW using Find option.
just place the curson on that entry selct delete.
That will serve your purpose.
Reward points if useful..