adjust test

Belonging to [master]:
  - OpenModelica/OMCompiler#2889
  - OpenModelica/OpenModelica-testsuite#1112

simulation/modelica/equations/ticket-5206.mos

@@ -40,17 +40,14 @@ val(x,1.0);
 // Result:
 // true
 // ""
-//
-// The selection of a new tearing variable failed.
 // record SimulationResult
 //     resultFile = "Test5206_res.mat",
 //     simulationOptions = "startTime = 0.0, stopTime = 1.0, numberOfIntervals = 500, tolerance = 1e-06, method = 'dassl', fileNamePrefix = 'Test5206', options = '', outputFormat = 'mat', variableFilter = '.*', cflags = '', simflags = ''",
 //     messages = "LOG_SUCCESS       | info    | The initialization finished successfully without homotopy method.
 // LOG_SUCCESS       | info    | The simulation finished successfully.
 // "
 // end SimulationResult;
-// "Warning: Function Tearing.selectTearingVar failed at least once. Use -d=tearingdump or -d=tearingdumpV for more information.
-// "
+// ""
 // 1.0
 // 1.0
 // endResult