Stop referring to "Java 8" features in documentation

Closes gh-36310

spring-test/src/main/java/org/springframework/test/context/jdbc/SqlGroup.java

@@ -27,7 +27,7 @@ import java.lang.annotation.Target;
  * Container annotation that aggregates several {@link Sql @Sql} annotations.
  *
  * <p>Can be used natively, declaring several nested {@code @Sql} annotations.
- * Can also be used in conjunction with Java 8's support for repeatable
+ * Can also be used in conjunction with Java's support for repeatable
  * annotations, where {@code @Sql} can simply be declared several times on the
  * same class or method, implicitly generating this container annotation.
  *

spring-test/src/main/java/org/springframework/test/context/transaction/TransactionalTestExecutionListener.java

@@ -100,9 +100,8 @@ import org.springframework.util.StringUtils;
  * execute certain <em>set up</em> or <em>tear down</em> code outside a
  * transaction. {@code TransactionalTestExecutionListener} provides such
  * support for methods annotated with {@link BeforeTransaction @BeforeTransaction}
- * or {@link AfterTransaction @AfterTransaction}. As of Spring Framework 4.3,
- * {@code @BeforeTransaction} and {@code @AfterTransaction} may also be declared
- * on Java 8 based interface default methods.
+ * or {@link AfterTransaction @AfterTransaction}. {@code @BeforeTransaction} and
+ * {@code @AfterTransaction} may also be declared on interface default methods.
  *
  * <h3>Configuring a Transaction Manager</h3>
  * <p>{@code TransactionalTestExecutionListener} expects a