[REM] project,hr_timesheet: removed dead _get_total_hours function

It should have been removed by 9b69184ffa.

addons/hr_timesheet/project_timesheet.py

@@ -15,9 +15,6 @@ class Project(models.Model):
 class Task(models.Model):
     _inherit = "project.task"
 
-    def _get_total_hours(self):
-        return super(Task, self)._get_total_hours() + self.effective_hours
-
     @api.multi
     def _get_subtask_count(self):
         for task in self:

addons/project/project.py

@@ -604,9 +604,6 @@ class task(osv.osv):
             self._store_history(cr, uid, ids, context=context)
         return result
 
-    def _get_total_hours(self):
-        return self.remaining_hours
-
     # ---------------------------------------------------
     # Mail gateway
     # ---------------------------------------------------