remove grape parameters

dune/fem-dg/test/parameter/paramBase

@@ -24,7 +24,6 @@ fem.threads.partitioningmethod: sfc
 fem.prefix: ./data
 fem.io.outputformat: vtk-cell # binary, vtk-cell, vtk-vertex, gnuplot, sub-vtk-cell
 fem.io.subsamplinglevel: 0
-fem.io.grapedisplay: 0
 # checkpointing step 
 fem.io.checkpointstep: 25000000
 # add time stamp to eoc file name

dune/fem-dg/test/poisson/parameter_cmake

@@ -47,11 +47,9 @@ fem.adaptation.method: generic
 
 # DATAWRITER
 # ----------
-# output format: grape | vtk-cell | vtk-vertex (projected in DG case),  sub-vtk-cell
+# output format: vtk-cell | vtk-vertex (projected in DG case),  sub-vtk-cell
 fem.io.outputformat: vtk-cell
 fem.io.subsamplinglevel: 0
-# toggle grape display (0 = off | 1 = on)
-fem.io.grapedisplay: 0
 
 
 # SOLVER

dune/fem-dg/test/stokes/parameter_cmake

@@ -59,10 +59,8 @@ fem.adaptation.maximumstrategy: true
 
 # DATAWRITER
 # ----------
-# output format: grape | vtk-cell | vtk-vertex (projected in DG case),  sub-vtk-cell
+# output format: vtk-cell | vtk-vertex (projected in DG case),  sub-vtk-cell
 fem.io.outputformat: vtk-cell
-# toggle grape display (0 = off | 1 = on)
-fem.io.grapedisplay: 0
 fem.io.subsamplinglevel: 0
 
 poisson.nonConformOrigin: false