fix: MySQL 8.0 removed NO_AUTO_CREATE_USER SQL mode, fixed #1492 (#1548)

mysql/my.cnf

@@ -6,5 +6,5 @@
 [mysql]
 
 [mysqld]
-sql-mode="STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"
+sql-mode="STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION"
 character-set-server=utf8