I'm having a peculiar problem with a class in production. The class is this one: https://github.com/907pine/NWHRN-sandbox/blob/master/src/classes/TrialCustomerPortalHomePageController.cls and I have no idea how it got there, and no one else does either. Usually when in my day-to-day org I'm able to delete classes by editing the class metadata, saving, and deploying the class to production. This class, however, just reverts back my changes when saving, making me think that this is either a built-in class (which it can't really be) or some class that came with some managed package (which it shouldn't be either since then the code wouldn't be visible). So it must have been copied from somewhere and deployed without regard for test coverage.
I see also, after browsing that github repo, that all of the classes there are present on the org. Are they a part of some SF Edition, like Developer Edition? Can anyone give an admin some pointers how to to get rid of these classes since after asking around - no one seems to know why they are there or for what purpose.