--- a/eric7/Graphics/ImportsDiagramBuilder.py	Fri May 21 17:54:15 2021 +0200
+++ b/eric7/Graphics/ImportsDiagramBuilder.py	Fri May 21 18:01:11 2021 +0200
@@ -328,16 +328,6 @@
                 colors=self.umlView.getDrawingColors())
             self.scene.addItem(assoc)
     
-    def getPersistenceData(self):
-        """
-        Public method to get a string for data to be persisted.
-        
-        @return persisted data string
-        @rtype str
-        """
-        return "package={0}, show_external={1}".format(
-            self.packagePath, self.showExternalImports)
-    
     def parsePersistenceData(self, version, data):
         """
         Public method to parse persisted data.