Don't assign plotSave function.

dstat-interface/dstat-interface/main.py

@@ -590,11 +590,11 @@ class Main(object):
     def on_file_save_exp_activate(self, menuitem, data=None):
         """Activate dialogue to save current experiment data. """
         if self.current_exp:
-            save_inst = save.manSave(self.current_exp)
+            save.manSave(self.current_exp)
     
     def on_file_save_plot_activate(self, menuitem, data=None):
         """Activate dialogue to save current plot."""
-        save_inst = save.plotSave(self.plot)
+        save.plotSave(self.plot)
     
     def on_menu_dropbot_connect_activate(self, menuitem, data=None):
         """Listen for remote control connection from µDrop."""