Note that while it's apparently still not possible to delete profile attributes, via an offer one could reset the profile to some other value or to an empty string. For example:adobe.target.trackEvent({'mbox': 'YOUR-MBOX',        'params': { 'profile.YOUR-ATTRIBUTE': '' }});

If you want to do this via an offer, you could reset the profile attribute to an empty string:adobe.target.trackEvent({'mbox': 'YOUR-MBOX',        'params': {          'profile.YOUR-ATTRIBUTE': ''}});Note that this does not remove the parameter but resets/removes the parameter value.