When a folder has a rule applied that you don’t need anymore, you can delete the
individual rule.
Hover over a folder with rules applied (indicated by the icon) and click More then Manage
Rules.
On the left side of the page, click the rule you want to delete. If you
might want to use the rule again, consider disabling it instead. Edit the
rule to do that.
Note: You can’t delete linked or inherited rules here;
that has to be done in the folder where they were created.
Click Delete.
When you’re asked to confirm the deletion, click
Delete.