Revert "Tutorial for NICFD with physics-informed, data-driven equation of sta…" (#197)

This reverts commit 9f7317f.

Author: bigfooted

_data/tutorials.yml

@@ -17,7 +17,6 @@
   - Unsteady_NACA0012
   - UQ_NACA0012
   - NICFD_nozzle
-  - NICFD_nozzle_datadriven
   - Aachen_Turbine
 
 - title: Incompressible Flow

_tutorials/compressible_flow/NICFD_nozzle/NICFD_nozzle_datadriven.md

@@ -50,8 +50,6 @@ Simulation of unsteady, external, viscous flow around an airfoil.
 Perform uncertainty quantification of errors arising due to assumptions inherent in turbulence models.
 * [Non-ideal compressible flow in a supersonic nozzle](/tutorials/NICFD_nozzle/)    
 Simulation of compressible flow in a nozzle using non-ideal thermodynamic models.
-* [Data-driven equation of state for non-ideal compressible fluids](/tutorials/NICFD_nozzle_datadriven/)    
-Demonstration of data-driven equation of state using a physics-informed neural network.
 * [Turbomachinery: Aachen Turbine stage with mixing plane](/tutorials/Aachen_Turbine/)    
 Simulation of compressible flow of the Aachen turbine demonstrating turbomachinery application.