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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def removeMainWindow(self, mainWindow):
 """ Removes the mainWindow from the list of windows. Saves the settings """

        logger.debug("removeMainWindow called")

        self.windowActionGroup.removeAction(mainWindow.activateWindowAction)
        self.repopulateAllWindowMenus()

        self.mainWindows.remove(mainWindow)