There is no process in Clarity that will abort and delete the process.
What you can do is run a process that makes a call to BPM_RUN_PROCESSES every so often like below:
UPDATE BPM_RUN_PROCESSES SET STATUS_CODE = 'BPM_PIS_ABORTED' WHERE STATUS_CODE = 'BPM_PIS_ERROR'
Then, you call call the clarity process "Delete Process Instance" with the ones that you want to clean out periodically.
This code has not been fully tested.
Hope this helps!
Chris