Counties — Ordinances — For-hire transportation services — Challenge to constitutionality of ordinance authorizing transportation network entities such as Uber and Lyft to operate in for-hire transportation market brought by plaintiffs who possessed a “medallion,” or license, to provide those services — Plaintiffs’ claims for declaratory and injunctive relief were mooted when Florida legislature passed new body of laws that preempted the TNE ordinance — District court did not err in dismissing plaintiffs’ claims for monetary damages arising under Takings and Equal Protection Clauses, which were not moot