Refs #16962 Fix some warnings

MantidPlot/src/Mantid/InstrumentWidget/InstrumentWindow.cpp

@@ -43,6 +43,8 @@ InstrumentWindow::~InstrumentWindow() {}
 /**
  * Load instrument window state from a Mantid project file
  * @param lines :: lines from the project file to load state from
+ * @param app :: handle to the application window
+ * @param fileVersion :: version of the Mantid project file
  * @return handle to the created instrument window
  */
 IProjectSerialisable *InstrumentWindow::loadFromProject(

MantidQt/MantidWidgets/inc/MantidQtMantidWidgets/InstrumentView/InstrumentWidgetTreeTab.h

@@ -21,10 +21,8 @@ public:
   void initSurface() override;
   /// Load settings for the tree widget tab from a project file
   virtual void loadFromProject(const std::string &lines) override;
-  ;
   /// Save settings for the tree widget tab to a project file
   virtual std::string saveToProject() const override;
-  ;
 public slots:
   void selectComponentByName(const QString &name);