remove multi preload (#1062)

Co-authored-by: NspectatorMrZ <13959374+SpectatorNan@users.noreply.github.com>

server/service/system/sys_menu.go

@@ -125,7 +125,7 @@ func (menuService *MenuService) AddBaseMenu(menu system.SysBaseMenu) error {
 func (menuService *MenuService) getBaseMenuTreeMap() (err error, treeMap map[string][]system.SysBaseMenu) {
 	var allMenus []system.SysBaseMenu
 	treeMap = make(map[string][]system.SysBaseMenu)
-	err = global.GVA_DB.Order("sort").Preload("MenuBtn").Preload("Parameters").Preload("Parameters").Find(&allMenus).Error
+	err = global.GVA_DB.Order("sort").Preload("MenuBtn").Preload("Parameters").Find(&allMenus).Error
 	for _, v := range allMenus {
 		treeMap[v.ParentId] = append(treeMap[v.ParentId], v)
 	}