Remove unused code in FormattingConversionServiceTests

spring-context/src/test/java/org/springframework/format/support/FormattingConversionServiceTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -321,28 +321,6 @@ public class FormattingConversionServiceTests {
 				TypeDescriptor.valueOf(String.class));
 	}
 
-	@Test
-	public void registerDefaultValueViaFormatter() {
-		registerDefaultValue(Date.class, new Date());
-	}
-
-	private <T> void registerDefaultValue(Class<T> clazz, final T defaultValue) {
-		formattingService.addFormatterForFieldType(clazz, new Formatter<T>() {
-			@Override
-			public T parse(String text, Locale locale) {
-				return defaultValue;
-			}
-			@Override
-			public String print(T t, Locale locale) {
-				return defaultValue.toString();
-			}
-			@Override
-			public String toString() {
-				return defaultValue.toString();
-			}
-		});
-	}
-
 	@Test
 	public void introspectedFormatter() {
 		formattingService.addFormatter(new NumberStyleFormatter("#,#00.0#"));