Stop referring to "Spring 3.x" features in documentation and code

spring-webmvc/src/main/java/org/springframework/web/servlet/DispatcherServlet.java

@@ -145,9 +145,9 @@ import org.springframework.web.util.WebUtils;
  * with mappings, handlers, etc. Only the root application context as loaded by
  * {@link org.springframework.web.context.ContextLoaderListener}, if any, will be shared.
  *
- * <p>As of Spring 3.1, {@code DispatcherServlet} may now be injected with a web
- * application context, rather than creating its own internally. This is useful in Servlet
- * 3.0+ environments, which support programmatic registration of servlet instances.
+ * <p>{@code DispatcherServlet} may be injected with a web application context,
+ * rather than creating its own internally. This is useful in Servlet 3.0+
+ * environments, which support programmatic registration of servlet instances.
  * See the {@link #DispatcherServlet(WebApplicationContext)} javadoc for details.
  *
  * @author Rod Johnson

spring-webmvc/src/main/java/org/springframework/web/servlet/FrameworkServlet.java

@@ -123,9 +123,9 @@ import org.springframework.web.util.WebUtils;
  * with XmlWebApplicationContext). The namespace can also be set explicitly via
  * the "namespace" servlet init-param.
  *
- * <p>As of Spring 3.1, {@code FrameworkServlet} may now be injected with a web
- * application context, rather than creating its own internally. This is useful in Servlet
- * 3.0+ environments, which support programmatic registration of servlet instances. See
+ * <p>{@code FrameworkServlet} may be injected with a web application context,
+ * rather than creating its own internally. This is useful in Servlet 3.0+
+ * environments, which support programmatic registration of servlet instances. See
  * {@link #FrameworkServlet(WebApplicationContext)} Javadoc for details.
  *
  * @author Rod Johnson