How To: Mac Empty Trash Immediately
Are you sick of seeing the Are you sure you want to permanently erase the items in the Trash? Message? You can disable this prompt which allows you to instantly delete anything in your trash bin.
1. Go to Finder Menu -> Preferences
2. Uncheck Show warning before emptying the Trash
3. Now, each time you empty your trash you will no longer receive the are you sure you want to empty message.