Remove unused properties and constants

Since the autoconfig totally backs off in the presence
of a WebSecurityConfigurerAdapter, there is no need to
order them ahead of/after the one provided by Spring Boot.

See gh-7958

spring-boot-samples/spring-boot-sample-secure-oauth2-actuator/src/main/java/sample/secure/oauth2/actuator/ActuatorSecurityConfiguration.java

@@ -2,6 +2,7 @@ package sample.secure.oauth2.actuator;
 
 import org.springframework.boot.autoconfigure.security.SpringBootSecurity;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.core.annotation.Order;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
 
@@ -11,6 +12,7 @@ import org.springframework.security.config.annotation.web.configuration.WebSecur
  * @author Madhura Bhave
  */
 @Configuration
+@Order(2) //before the resource server configuration
 public class ActuatorSecurityConfiguration extends WebSecurityConfigurerAdapter {
 
 	private final SpringBootSecurity springBootSecurity;