[REM] project: remove profitability.rst (#812)

These pages documented very straightforward screens and flows that a user can easily figure out without the help of dedicated documentation. Besides, those screens are frequently reworked, thus requiring to
maintain the related pages very closely. This commit removes such low values pages to reduce the technical debt and allow focusing on actually useful documentation pages.

project/advanced.rst

@@ -7,4 +7,3 @@ Advanced
 
    advanced/advanced_projects
    advanced/feedback
-   advanced/profitability

project/advanced/profitability.rst

@@ -1,56 +0,0 @@
-=============================
-Track Projects’ Profitability
-=============================
-
-A project runs smoother if you can have an overview of its costs, revenues, profitability, tasks,
-time and people, all in the same place. It allows you to make smarter business decisions as you know
-where you are standing and can course-correct if needed.
-
-Track costs and revenue
-=======================
-
-If you have the Timesheets application installed
-------------------------------------------------
-
-Go to :menuselection:`Project --> Configuration --> Projects`, choose the respective project,
-*Edit* and enable *Timesheets*. A menu *Overview* becomes available in the Kanban view.
-
-.. image:: media/timesheet_instaled.png
-   :align: center
-   :alt: View of the dashboard and overview menu available in Odoo Project
-
-The overview shows the hours recorded split by the different billable options, profitability, time
-by people according to the billable hours recorded, and even a timesheet table.
-
-.. image:: media/hours_profitability.png
-   :align: center
-   :alt: Click on overview and have a detailed view of the hours recorded in Odoo Project
-
-If you do not have the Timesheets application installed
--------------------------------------------------------
-
-| Activate the :doc:`Developer mode <../../general/developer_mode/activate>`. Then go to
-  *Manager Users* and enable *Analytic Accounting*. Now, go to :menuselection:`Project -->
-  Configuration --> Projects` and specify an *Analytic Account* under the needed project.
-| A *Profitability* menu to the costs and revenues of this analytic account is directly available
-  in the Kanban view.
-
-.. image:: media/not_timesheet_installed.png
-   :align: center
-   :height: 270
-   :alt: Profitability menu being shown on the dashboard view in Odoo Project
-
-Reporting
-=========
-
-Under *Reporting*, obtain a report on the *Project Costs and Revenues*. Choose among graph options
-or do your analysis through a pivot view.
-
-.. image:: media/reporting.png
-   :align: center
-   :alt: Overview of the reporting page showing costs and revenues in Odoo Project
-
-.. seealso::
-   - :doc:`../../accounting/others/analytic/usage`
-   - :doc:`../../accounting/others/analytic/timesheets`
-   - :doc:`../../accounting/others/analytic/purchases_expenses`