diff --git a/app/Models/ProductSpu.php b/app/Models/ProductSpu.php
index ebfa47a8..45025027 100644
--- a/app/Models/ProductSpu.php
+++ b/app/Models/ProductSpu.php
@@ -66,31 +66,4 @@ class ProductSpu extends Model
     {
         return $this->skus()->exists();
     }
-
-    /**
-     * 确认给定的 SKU 是否有效
-     *
-     * @param \App\Models\ProductSku $sku
-     * @return bool
-     */
-    public function isValidProductSku(ProductSku $sku): bool
-    {
-        if ($this->getKey() !== $sku->spu_id) {
-            return false;
-        }
-
-        if (count($specs = (array) $sku->specs) === $this->specs->count()) {
-            foreach ($this->specs as $spec) {
-                $key = $spec->getKey();
-
-                if (! array_key_exists($key, $specs) || ! in_array($specs[$key], $spec->items)) {
-                    return false;
-                }
-            }
-
-            return true;
-        }
-
-        return false;
-    }
 }