Gui: [skip ci] Revert workaround to avoid to handle wheel events twice inside the 3d view
Gui: [skip ci] Revert workaround to avoid to handle wheel events twice inside the 3d view

This workaround caused a regression with Qt 5.15. For more details see: https://forum.freecadweb.org/viewtopic.php?f=3&t=50231

Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master