Fix SystemClass duplicate 'Name' attribute in xml export

When refactoring Element::toXml, we forgot to make the necessary adaptation in
SystemClass::toXml. The latter does not need to set the Name attribute anymore
because this is taken care of by the base toXml method.

SystemClass::toXml now only calls the base and can therefore be completely
removed.

Change-Id: Ibd12feaac2c101dcc22e8716e332cb02f03ba99a
Tracked-On: https://jira01.devtools.intel.com/browse/IMINAN-19676
Signed-off-by: David Wagner <[email protected]>

Author: dawagner

parameter/SystemClass.cpp

@@ -314,12 +314,3 @@ bool CSystemClass::init(string& strError)
 {
     return base::init(strError);
 }
-
-// From IXmlSource
-void CSystemClass::toXml(CXmlElement& xmlElement, CXmlSerializingContext& serializingContext) const
-{
-    // Set the name of system class
-    xmlElement.setNameAttribute(getName());
-
-    base::toXml(xmlElement, serializingContext);
-}

parameter/SystemClass.h

@@ -75,9 +75,6 @@ class CSystemClass : public CConfigurableElement
     virtual bool init(std::string& strError);
     virtual std::string getKind() const;
 
-    // From IXmlSource
-    virtual void toXml(CXmlElement& xmlElement, CXmlSerializingContext& serializingContext) const;
-
 private:
     CSystemClass(const CSystemClass&);
     CSystemClass& operator=(const CSystemClass&);