Don't check_access when deleting timesheet works from projects

issue5840
review21241003

work.py

@@ -455,7 +455,8 @@ class Work(ModelSQL, ModelView):
         super(Work, cls).delete(project_works)
 
         if timesheet_works:
-            TimesheetWork.delete(timesheet_works)
+            with Transaction().set_context(_check_access=False):
+                TimesheetWork.delete(timesheet_works)
 
     @classmethod
     def search_global(cls, text):