Remove questionable test model ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.HeatExchanger.kc_roundTube

[beutlich]

Alternative PR for #3499 to address #2969.

[HansOlsson]

Does anyone know if we have another test for the underlying model/function?
(I was planning to run coverage later today, so I guess I can tell then.)

[maltelenz]

In absence of a response from the library officer, I think this is our best option.

[HansOlsson]

This does not seem ideal.

As far as I can see Modelica.Fluid.Dissipation.HeatTransfer.HeatExchanger.kc_roundTube is only used in this example ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.HeatExchanger.kc_roundTube

However,

• Also Nu[2] is problematic, but around 0.00244 s. Thus the problem is with SlitFin and LouverFin
• The model is not a straightforward function-test since it implicitly solves for mass-flow based on Reynolds number, but that is not the cause of the problem.
• ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.HeatExchanger.kc_roundTube_KC tests the underlying function, and in that test-model variant 2 and 3 are commented out (i.e. SlitFin and LouverFin). I would propose to do the same here.

[beutlich]

Closed in favour of #3512.