Merge pull request #1 from liushuai/bug-removefailed

修改removeSetting 方法 删除seting失败

src/models/TargetSettingModel.php

@@ -179,7 +179,7 @@ public function setSetting($key, $value, $targetType = '', $targetId = 0, $descr
     public function removeSetting($key, $targetType = '', $targetId = 0)
     {
         $conditions = ['target_type' => $targetType, 'target_id' => $targetId, 'key' => $key];
-        if (!$model = static::find()->where($conditions)->limit(1)->one()) {
+        if ($model = static::find()->where($conditions)->limit(1)->one()) {
             return $model->delete();
         }
         return false;