GEODE-8496: skip windows test that broke after bumping junit from 4.12 to 4.13 (apache#5554)

Author: onichols-pivotal

geode-core/src/integrationTest/java/org/apache/geode/internal/cache/SimpleDiskRegionJUnitTest.java

@@ -22,6 +22,7 @@
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.fail;
+import static org.junit.Assume.assumeFalse;
 
 import java.io.File;
 import java.util.Collections;
@@ -31,6 +32,7 @@
 import org.junit.Test;
 
 import org.apache.geode.StatisticsFactory;
+import org.apache.geode.internal.lang.SystemUtils;
 import org.apache.geode.test.dunit.ThreadUtils;
 
 /**
@@ -54,6 +56,7 @@ protected final void postSetUp() throws Exception {
    */
   @Test
   public void testBasicClose() {
+    assumeFalse(SystemUtils.isWindows());
     {
       deleteFiles();
       try {