Remove redundant _update_axisinfo call

`set_units` calls the `_update_axisinfo` function internally, so the
call here was redundant.

Author: chahak13

lib/matplotlib/backends/qt_editor/figureoptions.py

@@ -205,7 +205,6 @@ def apply_callback(data):
             # Restore the unit data
             axis.converter = axis_converter[name]
             axis.set_units(axis_units[name])
-            axis._update_axisinfo()
 
         # Set / Curves
         for index, curve in enumerate(curves):