Bugfix/fix sonarcube findings (#6369)

* Fix sonarcube findings.
---------
Co-authored-by: Kim Kulling <kim.kulling@draeger.com>

code/AssetLib/AMF/AMFImporter.cpp

@@ -327,8 +327,7 @@ void AMFImporter::ParseNode_Root() {
 // Multi elements - Yes.
 // Parent element - <amf>.
 void AMFImporter::ParseNode_Constellation(XmlNode &node) {
-    std::string id;
-    id = node.attribute("id").as_string();
+    std::string id = node.attribute("id").as_string();
 
     // create and if needed - define new grouping object.
     AMFNodeElementBase *ne = new AMFConstellation(mNodeElement_Cur);