remove unused code.

src/main/java/cn/quantgroup/xyqb/service/v2/LoginContext.java

@@ -28,7 +28,6 @@ import java.util.Map;
 @Service
 public class LoginContext {
     private final ApplicationEventPublisher applicationEventPublisher;
-    private final IWechatService wechatService;
 
     private final IUserRepository userRepository;
 
@@ -38,7 +37,6 @@ public class LoginContext {
 
     public LoginContext(List<LoginStrategy> loginStrategies, ApplicationEventPublisher applicationEventPublisher, IWechatService wechatService, IUserRepository userRepository, IUserInfoRepository userInfoRepository) {
         this.applicationEventPublisher = applicationEventPublisher;
-        this.wechatService = wechatService;
         this.userRepository = userRepository;
         this.userInfoRepository = userInfoRepository;
         loginStrategies.forEach(i -> interloginStrategyMap.put(i.getType(), i));