Note that we don't (can't) delete profiles in WikiTree. They can be merged into other profiles, but before we do that we should make a valiant effort to figure out what the profile creator intended and whether the profile represents a real person.
In this case, it looks like Harlan and Michael were supposedly born about 1649, apparently in Ulster, to a family that later migrated to Pennsylvania. The fact that internet family trees identify their mother as a woman who would have been only 12 years old at their birth doesn't mean they didn't exist. It's likely that these profiles are based to some extent on real people, but they may be connected to the wrong parents (or at least the wrong mother), or their data may have been mangled in some other way.
I suggest that you add the template {{Uncertain Existence}} to the profiles for Harlan and Michael, and revise the biographies to explain the situation to anyone who visits the profile. State that the profile was created by a Gedcom import in 2011, that the source cited was an Ancestry Family Tree that is no longer available, that the parents identified in the import were Henry and Rose (with links to their profiles), but Rose was too young to be their mother, etc. If further research helps prove that Harlan and Michael didn't exist, then the profiles can be merged away, but I don't think you have that proof yet.
To get the process started, I added the "Uncertain" qualifier for both of Harlan's supposed parents.