CMake: Move to Tr::tr

Change-Id: I169da93b5184351cb915d4c198fd33318fcfe06f
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/cmakeprojectmanager/cmakeautocompleter.h

@@ -7,8 +7,7 @@
 
 #include <texteditor/autocompleter.h>
 
-namespace CMakeProjectManager {
-namespace Internal {
+namespace CMakeProjectManager::Internal {
 
 class CMAKE_EXPORT CMakeAutoCompleter : public TextEditor::AutoCompleter
 {
@@ -27,5 +26,4 @@ public:
     bool contextAllowsElectricCharacters(const QTextCursor &cursor) const override;
 };
 
-} // namespace Internal
-} // namespace CMakeProjectManager
+} // CMakeProjectManager::Internal