Prior to this commit the install of pad_project crashed because it
tries to add a the description_pad field bellow the description field in
the project form view, which was part of the description notebook that
has beeen removed in #66589.
After this commit the description_pad will not more be added in the project view.
Deletion of the fields in the model will be assessed with the PO.
closesodoo/odoo#68410
Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>