in civil cases must be relevant to the subject matter of the case and must be admissible or reasonably calculated to lead to admissible evidence); Morton Plant Hospital Ass'n, Inc. v. Shallbas, 960 So. 2d 820, 824 (Fla. 2d DCA 2007) (holding that "discovery should be denied when it has been established that the Case 9:08-cv-