Function: Removed unused code in tutorials codebase
Why: To facilitate new features the code base of the tutorial pages was refactored. This can cause compilation of tutorialscripts to fail. To fix these issues take into account following changes in the namespace 'TenForce.Execution.Api2.Objects'.
On the Tutorial class: Properties 'SubTitle' and 'HideDelete' were removed
On the TutorialLine class: Properties 'Formula', 'Description' and 'TutorialLineStatus' were removed
The class TutorialLineStatus was removed entirely, as well as the providers and other classes depending on this class.