views/flights: Remove unused JSON file extension routes
views/flights: Remove unused JSON file extension routes

Harry-R/skylines,shadowoneau/skylines,Turbo87/skylines,Turbo87/skylines,Harry-R/skylines,RBE-Avionik/skylines,skylines-project/skylines,shadowoneau/skylines,Turbo87/skylines,skylines-project/skylines,skylines-project/skylines,Turbo87/skylines,RBE-Avionik/skylines,Harry-R/skylines,Harry-R/skylines,RBE-Avionik/skylines,shadowoneau/skylines,skylines-project/skylines,shadowoneau/skylines,RBE-Avionik/skylines