Merge pull request #3083 from SomberNight/fix_qt_mainwindow_updatemaxfee

follow-up 198cc9d737

gui/qt/main_window.py

@@ -2430,7 +2430,6 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, PrintError):
         def on_dynfee(x):
             self.config.set_key('dynamic_fees', x == Qt.Checked)
             self.fee_slider.update()
-            update_maxfee()
         dynfee_cb = QCheckBox(_('Use dynamic fees'))
         dynfee_cb.setChecked(self.config.is_dynfee())
         dynfee_cb.setToolTip(_("Use fees recommended by the server."))