Fem: modernize C++: use override

src/Mod/Fem/App/FemConstraintInitialTemperature.h

@@ -56,7 +56,7 @@ public:
 
 protected:
     void handleChangedPropertyType(Base::XMLReader& reader, const char* TypeName,
-                                   App::Property* prop);
+                                   App::Property* prop) override;
     void onChanged(const App::Property* prop) override;
 
 };

src/Mod/Fem/App/FemConstraintTemperature.h

@@ -58,7 +58,7 @@ public:
 
 protected:
     void handleChangedPropertyType(Base::XMLReader& reader, const char* TypeName,
-                                   App::Property* prop);
+                                   App::Property* prop) override;
     void onChanged(const App::Property* prop) override;
 
 };

src/Mod/Fem/App/FemConstraintTransform.h

@@ -59,7 +59,7 @@ public:
 
 protected:
     void handleChangedPropertyType(Base::XMLReader& reader, const char* TypeName,
-                                   App::Property* prop);
+                                   App::Property* prop) override;
     void onChanged(const App::Property* prop) override;
 
 };

src/Mod/Fem/Gui/AbaqusHighlighter.h

@@ -36,10 +36,10 @@ class AbaqusHighlighter : public Gui::SyntaxHighlighter
 {
 public:
     explicit AbaqusHighlighter(QObject* parent);
-    virtual ~AbaqusHighlighter();
+    ~AbaqusHighlighter() override;
 
 protected:
-    void highlightBlock(const QString &text);
+    void highlightBlock(const QString &text) override;
 };
 
 } // namespace FemGui

src/Mod/Fem/Gui/PreCompiled.h

@@ -36,7 +36,6 @@
 #include <cassert>
 #include <cmath>
 #include <iostream>
-#include <math.h>
 
 // STL
 #include <algorithm>