Before this commit, the `display_project_id` field was a bit confusing
for the user to know what is the goal of this field. Also this field is
available when the user wants to import his data into Odoo, if he does not
know the goal of this field then he could be lost to know which field he
should for his data to import (or even export).
This commit removes the display_project_id field and so a task will be
private one if the project and the parent fields are not set. The
project to set to the timesheet will be the one set on the task or the
one set on one of its parent tasks.
task-3230063
X-original-commit: 22eda5a5ddcfcda9fa6597d6fe21eb20f525799f
Part-of: odoo/odoo#115781
Xavier Bol (xbo)
de7d0b17c5