Remove clause overriding axle behaviour

If the clause was trying to fix an specific issue of the axle model, the issue
must be identified and fixed at the Axle class

Author: cesarBLG

Source/Orts.Simulation/Simulation/RollingStocks/MSTSLocomotive.cs

@@ -2805,16 +2805,8 @@ public virtual void AdvancedAdhesion(float elapsedClockSeconds)
             // This enables steam locomotives to have different speeds for driven and non-driven wheels.
             if (EngineType == EngineTypes.Steam && SteamEngineType != MSTSSteamLocomotive.SteamEngineTypes.Geared)
             {
-                if (AbsSpeedMpS <= 0.15 && !WheelSlip)
-                {
-                    WheelSpeedSlipMpS = SpeedMpS;
-                    WheelSpeedMpS = SpeedMpS;
-                }
-                else
-                {
-                    WheelSpeedSlipMpS = LocomotiveAxles[0].AxleSpeedMpS;
-                    WheelSpeedMpS = SpeedMpS;
-                }
+                WheelSpeedSlipMpS = LocomotiveAxles[0].AxleSpeedMpS;
+                WheelSpeedMpS = SpeedMpS;
             }
             else WheelSpeedMpS = LocomotiveAxles[0].AxleSpeedMpS;