Toponaming: remove unused method with compile warnings

src/App/GeoFeature.cpp

@@ -278,12 +278,4 @@ std::vector<const char*> GeoFeature::getElementTypes(bool /*all*/) const
     return prop->getComplexData()->getElementTypes();
 }
 
-std::vector<Data::IndexedName> GeoFeature::getHigherElements(const char* element, bool silent) const
-{
-    auto prop = getPropertyOfGeometry();
-    if (!prop) {
-        return {};
-    }
-    return prop->getComplexData()->getHigherElements(element, silent);
-}
 #endif

src/App/GeoFeature.h

@@ -179,8 +179,6 @@ public:
 
     virtual std::vector<const char *> getElementTypes(bool all=true) const;
 
-    /// Return the higher level element names of the given element
-    virtual std::vector<Data::IndexedName> getHigherElements(const char *name, bool silent=false) const;
 
 protected:
     void onChanged(const Property* prop) override;