flights-table: Removed unnecessary imports
flights-table: Removed unnecessary imports

lib.helpers is imported as "h" into the templates anyway

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