Remove useless attribute override

This commit removes the override proxyBeanMethods as the aliased
attribute is taking precedence.

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/SpringBootConfiguration.java

@@ -43,7 +43,7 @@ import org.springframework.core.annotation.AliasFor;
 @Target(ElementType.TYPE)
 @Retention(RetentionPolicy.RUNTIME)
 @Documented
-@Configuration(proxyBeanMethods = false)
+@Configuration
 public @interface SpringBootConfiguration {
 
 	/**