You can remove quota restrictions for a quota target in two ways: by changing the quotas file entry so that there is no restriction on resource use for that quota target, or by deleting the quotas file entry for that quota target.
Deleting a quota by removing resource restrictions
You can remove a quota for a specific target by removing the resource restrictions for that target. This is equivalent to changing that quota entry to a tracking quota.
Deleting a quota by removing the quotas file entry
You can remove a quota for a specific target by removing the quotas file entry for that target. Depending on what other quotas you have set up, you then need to resize or reinitialize quotas.