[Core] Remove various DisplayModes from FEM

src/Mod/Fem/Gui/ViewProviderAnalysis.cpp

@@ -147,11 +147,6 @@ std::vector<App::DocumentObject*> ViewProviderFemAnalysis::claimChildren() const
     return Gui::ViewProviderDocumentObjectGroup::claimChildren();
 }
 
-std::vector<std::string> ViewProviderFemAnalysis::getDisplayModes() const
-{
-    return {"Analysis"};
-}
-
 void ViewProviderFemAnalysis::hide()
 {
     Gui::ViewProviderDocumentObjectGroup::hide();

src/Mod/Fem/Gui/ViewProviderAnalysis.h

@@ -75,8 +75,6 @@ public:
 
     void setupContextMenu(QMenu*, QObject*, const char*) override;
 
-    /// list of all possible display modes
-    std::vector<std::string> getDisplayModes() const override;
     /// shows solid in the tree
     bool isShow() const override
     {

src/Mod/Fem/Gui/ViewProviderSolver.cpp

@@ -46,11 +46,6 @@ ViewProviderSolver::ViewProviderSolver()
 
 ViewProviderSolver::~ViewProviderSolver() = default;
 
-std::vector<std::string> ViewProviderSolver::getDisplayModes() const
-{
-    return {"Solver"};
-}
-
 bool ViewProviderSolver::onDelete(const std::vector<std::string>&)
 {
     // warn the user if the object has unselected children

src/Mod/Fem/Gui/ViewProviderSolver.h

@@ -53,8 +53,6 @@ public:
     {
         return Visibility.getValue();
     }
-    /// A list of all possible display modes
-    std::vector<std::string> getDisplayModes() const override;
 
     // handling when object is deleted
     bool onDelete(const std::vector<std::string>&) override;