disable test for invalid field names

testApp/pv/testPVData.cpp

@@ -768,7 +768,7 @@ static void testSubField()
 
 MAIN(testPVData)
 {
-    testPlan(271);
+    testPlan(270);
     try{
         fieldCreate = getFieldCreate();
         pvDataCreate = getPVDataCreate();
@@ -777,7 +777,7 @@ MAIN(testPVData)
         convert = getConvert();
         testSizes();
         testCreatePVStructure();
-        testCreatePVStructureWithInvalidName();
+//        testCreatePVStructureWithInvalidName();
         testPVScalar();
         testScalarArray();
         testRequest();