Spring Cleaning in December

- Delete unused imports
- Delete unused code
- Clean up warnings

spring-core/src/test/java/org/springframework/core/convert/support/DefaultConversionServiceTests.java

@@ -561,9 +561,9 @@ public class DefaultConversionServiceTests {
 	}
 
 	@Test
-	@SuppressWarnings("unchecked")
+	@SuppressWarnings("rawtypes")
 	public void convertObjectToCollection() {
-		List<String> result = (List<String>) conversionService.convert(3L, List.class);
+		List result = conversionService.convert(3L, List.class);
 		assertEquals(1, result.size());
 		assertEquals(3L, result.get(0));
 	}

spring-core/src/test/java/org/springframework/util/xml/AbstractStaxHandlerTestCase.java

@@ -82,7 +82,7 @@ public abstract class AbstractStaxHandlerTestCase {
 
 	private static boolean wwwSpringframeworkOrgIsAccessible() {
 		try {
-			new Socket("www.springframework.org", 80);
+			new Socket("www.springframework.org", 80).close();
 		}
 		catch (Exception e) {
 			return false;