refactor(admin): remove unused 'where' option in system module

- Remove unnecessary 'where' option from various models in system module
- Simplify query methods by removing redundant 'where' calls
- Affected models: Config, Node, SystemAdmin, SystemMenu, SystemNode

app/admin/model/SystemMenu.php

@@ -25,7 +25,7 @@ class SystemMenu extends TimeModel
      */
     public function getPidMenuList(): array
     {
-        $list = $this->removeOption('where')->field('id,pid,title')->where([
+        $list = $this->removeOption()->field('id,pid,title')->where([
             ['pid', '<>', MenuConstant::HOME_PID],
             ['status', '=', 1],
         ])->select()->toArray();