Stop referring to features as "Java 5" features

With a Java 8 baseline in place for quite some time now, it no longer
makes sense to refer to features such as annotations as "Java 5
annotations".

This commit also removes old `Tiger*Tests` classes, thereby avoiding
duplicate execution of various tests.

spring-beans/src/main/java/org/springframework/beans/annotation/package-info.java

@@ -1,5 +1,5 @@
 /**
- * Support package for beans-style handling of Java 5 annotations.
+ * Support package for beans-style handling of annotations.
  */
 @NonNullApi
 @NonNullFields

spring-beans/src/main/java/org/springframework/beans/factory/annotation/RequiredAnnotationBeanPostProcessor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2022 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.
@@ -44,7 +44,7 @@ import org.springframework.util.Assert;
 /**
  * {@link org.springframework.beans.factory.config.BeanPostProcessor} implementation
  * that enforces required JavaBean properties to have been configured.
- * Required bean properties are detected through a Java 5 annotation:
+ * Required bean properties are detected through an annotation:
  * by default, Spring's {@link Required} annotation.
  *
  * <p>The motivation for the existence of this BeanPostProcessor is to allow