[fix]There is a set of built-in account passwords (#63)

diff --git a/manager/general/src/main/java/org/apache/doris/stack/service/user/AuthenticationService.java b/manager/general/src/main/java/org/apache/doris/stack/service/user/AuthenticationService.java
index bf74db9..17f56db 100644
--- a/manager/general/src/main/java/org/apache/doris/stack/service/user/AuthenticationService.java
+++ b/manager/general/src/main/java/org/apache/doris/stack/service/user/AuthenticationService.java
@@ -98,8 +98,8 @@
 @Slf4j
 public class AuthenticationService extends BaseService {
 
-    private static final String BUILT_IN_USERNAME = "buop@studio.com";
-    public static String builtInPassword = "studio@123";
+    private static final String BUILT_IN_USERNAME = "";
+    public static String builtInPassword = "";
     private static StringBuffer mapString;
 
     // Name of cookie
@@ -361,16 +361,6 @@
         // user id
         int userId;
 
-        // check built in user and password
-        if (username.matches(BUILT_IN_USERNAME) && loginReq.getPassword().equals(builtInPassword)) {
-            String sessionId = UuidUtil.newUuid();
-
-            CoreSessionEntity sessionEntity = new CoreSessionEntity(sessionId, -1,
-                    new Timestamp(System.currentTimeMillis()), null);
-            sessionRepository.save(sessionEntity);
-            return sessionId;
-        }
-
         List<CoreUserEntity> coreUserEntities;
         // login by first name or email
         if (username.matches(EMAIL_REGEX)) {