[SCB-2619] remove @Component annotation of BeansHolder (#3151)

diff --git a/handlers/handler-loadbalance/src/main/java/org/apache/servicecomb/loadbalance/BeansHolder.java b/handlers/handler-loadbalance/src/main/java/org/apache/servicecomb/loadbalance/BeansHolder.java
index d70bfb2..bb5c4db 100644
--- a/handlers/handler-loadbalance/src/main/java/org/apache/servicecomb/loadbalance/BeansHolder.java
+++ b/handlers/handler-loadbalance/src/main/java/org/apache/servicecomb/loadbalance/BeansHolder.java
@@ -20,9 +20,6 @@
 
 import javax.inject.Inject;
 
-import org.springframework.stereotype.Component;
-
-@Component
 public class BeansHolder {
   @Inject
   private List<ExtensionsFactory> extentionsFactories;