CMake: Do not sort nodes

The project tree will sort the nodes as needed, so there is no
need to sort the list beforehand.

Change-Id: I1ee71100aba003117c918c5295224ec1253dc807
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

src/plugins/cmakeprojectmanager/tealeafreader.cpp

@@ -456,8 +456,6 @@ void TeaLeafReader::extractData()
                   }))
         m_files.emplace_back(std::make_unique<FileNode>(topCMake, FileType::Project, false));
 
-    Utils::sort(m_files, &Node::sortByPath);
-
     m_buildTargets = cbpparser.buildTargets();
 }