We can not delete ids events manually from AMPCLI, if you want to clearnup any unwanted data you can run command #cleanup from AMPCLI option 11
cleanup - Delete files that are no longer needed.
This includes log files, old source files, pre upgrade backups, etc.
You will confirm the deletions and will have the option to see the list.
Every morning airwave deletes old histoircal data we can decrease hisotorical retention value in AMPSetup>General>Historical Retention section
To delete IDS events
Radius/ARM/IDS Events (1-550 days):
To delete traps/syslog
Device Events (Syslog, Traps) (1-31 days):