flask: Removed unnecessary static_folder constructor parameter
flask: Removed unnecessary static_folder constructor parameter

We have the assets blueprint for that.

Harry-R/skylines,Harry-R/skylines,snip/skylines,RBE-Avionik/skylines,skylines-project/skylines,RBE-Avionik/skylines,TobiasLohner/SkyLines,Turbo87/skylines,RBE-Avionik/skylines,shadowoneau/skylines,TobiasLohner/SkyLines,snip/skylines,skylines-project/skylines,Turbo87/skylines,snip/skylines,Turbo87/skylines,shadowoneau/skylines,Turbo87/skylines,kerel-fs/skylines,TobiasLohner/SkyLines,shadowoneau/skylines,kerel-fs/skylines,Harry-R/skylines,Harry-R/skylines,skylines-project/skylines,RBE-Avionik/skylines,kerel-fs/skylines,skylines-project/skylines,shadowoneau/skylines