remove test-cases too large for nightly testing

benchmarks/2d_large/guido_new.geo

benchmarks/2d_large/poisson_very_fine_mesh.geo

benchmarks/2d_large/wing-splines.geo

benchmarks/3d_large/CubeAniso.geo

benchmarks/3d_large/Falcon/CreateFullInitialMesh.geo

...s/3d_large/Falcon/CreateVolumeAroundFalcon_FrontalISO.geo

benchmarks/3d_large/Falcon/FullSurfaceMeshUniform.geo

benchmarks/3d_large/Falcon/InitialMeshFalcon.msh

benchmarks/3d_large/Falcon/README.txt

benchmarks/3d_large/Falcon/SurfaceMeshAnisoCurvature.geo

benchmarks/3d_large/Falcon/SurfaceMeshAnisoCurvature.stl

benchmarks/3d_large/Falcon/SurfaceMeshUniform.geo

benchmarks/3d_large/Falcon/falcon_surface.script

benchmarks/3d_large/Falcon/falcon_volume.script

benchmarks/3d_large/Falcon/fullfalcon_surface.script

benchmarks/3d_large/Falcon/fullfalcon_volume.script

benchmarks/3d_large/Falcon/fullsplit.script

benchmarks/3d_large/Falcon/param.geo

benchmarks/3d_large/Falcon/partition.script

benchmarks/3d_large/Falcon/split.script