Index: Riskeer/Integration/src/Riskeer.Integration.Plugin/RiskeerPlugin.cs
===================================================================
diff -u -r9a62ba8bb83c146c29ac911d689785361eac92ed -r89376e8f8a92198110ade83e0bf88f6ed486322b
--- Riskeer/Integration/src/Riskeer.Integration.Plugin/RiskeerPlugin.cs	(.../RiskeerPlugin.cs)	(revision 9a62ba8bb83c146c29ac911d689785361eac92ed)
+++ Riskeer/Integration/src/Riskeer.Integration.Plugin/RiskeerPlugin.cs	(.../RiskeerPlugin.cs)	(revision 89376e8f8a92198110ade83e0bf88f6ed486322b)
@@ -1050,29 +1050,13 @@
                 CanDrag = (context, o) => true
             };
 
-            yield return new TreeNodeInfo<DesignWaterLevelCalculationsGroupContext>
-            {
-                Text = context => RiskeerCommonFormsResources.WaterLevelCalculations_DisplayName,
-                Image = context => RiskeerCommonFormsResources.GeneralFolderIcon,
-                ContextMenuStrip = DesignWaterLevelCalculationsGroupContextMenuStrip,
-                ChildNodeObjects = DesignWaterLevelCalculationsGroupContextChildNodeObjects
-            };
-
             yield return new TreeNodeInfo<DesignWaterLevelCalculationsContext>
             {
                 Text = context => RiskeerPluginHelper.FormatCategoryBoundaryName(context.CategoryBoundaryName),
                 Image = context => RiskeerCommonFormsResources.GenericInputOutputIcon,
                 ContextMenuStrip = DesignWaterLevelCalculationsContextMenuStrip
             };
 
-            yield return new TreeNodeInfo<WaveHeightCalculationsGroupContext>
-            {
-                Text = context => RiskeerCommonFormsResources.WaveHeightCalculations_DisplayName,
-                Image = context => RiskeerCommonFormsResources.GeneralFolderIcon,
-                ContextMenuStrip = WaveHeightCalculationsGroupContextMenuStrip,
-                ChildNodeObjects = WaveHeightCalculationsGroupContextChildNodeObjects
-            };
-
             yield return new TreeNodeInfo<WaveHeightCalculationsContext>
             {
                 Text = context => RiskeerPluginHelper.FormatCategoryBoundaryName(context.CategoryBoundaryName),