It's probably better that you Not delete a catalog until you are certain that you know what you are deleting. First make sure that the -2.lrcat file is the one that you want to sync, then sync it and make sure it's okay. Then you can delete your old catalog. Again you need to make sure that the -2.lrcat file is the right one before you delete the old one.
I understand and thank you for your reply. Since I'm just starting with LR and I have nothing I want to save, then would it be okay to delete? I'm in the process of addressing other LR issues and I'd feel better starting fresh.