Remove the displayUnit modifier (since already defined in Types)

ref OpenIPSL#334

Author: dietmarw

OpenIPSL/Tests/Solar/PowerFactory/DIgSILENT_PV.mo

@@ -9,7 +9,7 @@ model DIgSILENT_PV "Simple system to test voltage drop disturbance in DIgSILENT_
     Placement(transformation(origin = {70, 30}, extent = {{10, -10}, {-10, 10}})));
   inner OpenIPSL.Electrical.SystemBase SysData annotation (
     Placement(transformation(origin = {-70.5, 90}, extent = {{-29.5, -10}, {29.5, 10}})));
-  OpenIPSL.Electrical.Solar.PowerFactory.DIgSILENT.PV_Plant pv_plant(M_b(displayUnit = "MV.A") = 0.5e6, P_0 = 300000, angle_0 = 0, v_0 = 1) annotation (
+  OpenIPSL.Electrical.Solar.PowerFactory.DIgSILENT.PV_Plant pv_plant(M_b = 0.5e6, P_0 = 300000, angle_0 = 0, v_0 = 1) annotation (
     Placement(transformation(origin = {-30, 0}, extent = {{-10, -10}, {10, 10}})));
 equation
   connect(pv_plant.p, voltage_source.p) annotation (