This reverts commit b0452667c72f330323f6b3366f45bf039d05feef, reversing
changes made to b2d99f3fa7b4c7c305aed4a8d975a8624a6d590f.
See forums discussion: https://forum.freecadweb.org/viewtopic.php?p=549120
Double-click is already handled by PartDesign::ViewProvider::doubleClicked()
Overridings in Loft & Pipe brings no specific behavior
By removing overridings, behavioral consistency is improved both in ...
... undo commands & body activation management when PartDesign items ...
... are double-clicked