Revert "Use JUnit TempDir instead of custom code."

This reverts commit ebf06ea.

Author: Gary Gregory

src/main/java/org/apache/commons/io/file/CloseablePath.java

@@ -66,7 +66,6 @@
 import org.apache.commons.io.file.AbstractTempDirTest;
 import org.apache.commons.io.file.PathUtils;
 import org.apache.commons.io.file.PathUtilsIsEmptyTest;
-import org.apache.commons.io.file.TempDirectory;
 import org.apache.commons.io.filefilter.IOFileFilter;
 import org.apache.commons.io.filefilter.NameFileFilter;
 import org.apache.commons.io.filefilter.WildcardFileFilter;
@@ -1622,19 +1621,21 @@ public void testIsDirectory() throws IOException {
         assertTrue(FileUtils.isDirectory(tempDirFile));
         assertFalse(FileUtils.isDirectory(testFile1));
 
-        final File tempDirAsFile;
-        try (final TempDirectory tempDir = TempDirectory.create(getClass().getCanonicalName())) {
-            tempDirAsFile = tempDir.toFile();
-            assertTrue(FileUtils.isDirectory(tempDirAsFile));
-        }
+        final Path tempDir = Files.createTempDirectory(getClass().getCanonicalName());
+        final File tempDirAsFile = tempDir.toFile();
+        assertTrue(FileUtils.isDirectory(tempDirAsFile));
+        Files.delete(tempDir);
         assertFalse(FileUtils.isDirectory(tempDirAsFile));
     }
 
     @Test
     public void testIsEmptyDirectory() throws IOException {
-        try (final TempDirectory tempDir = TempDirectory.create(getClass().getCanonicalName())) {
-            final File tempDirAsFile = tempDir.toFile();
+        final Path tempDir = Files.createTempDirectory(getClass().getCanonicalName());
+        final File tempDirAsFile = tempDir.toFile();
+        try {
             Assertions.assertTrue(FileUtils.isEmptyDirectory(tempDirAsFile));
+        } finally {
+            Files.delete(tempDir);
         }
         Assertions.assertFalse(FileUtils.isEmptyDirectory(PathUtilsIsEmptyTest.DIR_SIZE_1.toFile()));
     }