Please consider implementing a feature to mandate a minimum call duration on call recordings. Recordings made that did not meet this minimum duration would be automatically deleted after the call completes.
This setting would apply to all calls and would likely live in the Advanced Settings page. I would suggest a default duration of 1 second to keep zero second call recordings from being made.
This new feature would eliminate the hassle of eliminating short duration calls manually via the Call Recordings Report page. It would also keep the Call Recordings Report more relevant and clutter free.