upgrade method delete by ids to inject array skus

app/code/Magento/Catalog/Api/CategoryListDeleteBySkuInterface.php

@@ -0,0 +1,26 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+namespace Magento\Catalog\Api;
+
+/**
+ * @api
+ * @since 100.0.2
+ */
+interface CategoryListDeleteBySkuInterface
+{
+    /**
+     * delete by skus list
+     *
+     * @param int   $categoryId
+     * @param array $productSkuList
+     * @return bool
+     *
+     * @throws \Magento\Framework\Exception\CouldNotSaveException
+     * @throws \Magento\Framework\Exception\InputException
+     */
+    public function deleteBySkus($categoryId, array $productSkuList);
+}

app/code/Magento/Catalog/Model/CategoryLinkRepository.php

@@ -9,7 +9,8 @@
 use Magento\Framework\Exception\InputException;
 use Magento\Framework\Exception\CouldNotSaveException;
 
-class CategoryLinkRepository implements \Magento\Catalog\Api\CategoryLinkRepositoryInterface
+class CategoryLinkRepository implements \Magento\Catalog\Api\CategoryLinkRepositoryInterface,
+    \Magento\Catalog\Api\CategoryListDeleteBySkuInterface
 {
     /**
      * @var CategoryRepository
@@ -21,16 +22,24 @@ class CategoryLinkRepository implements \Magento\Catalog\Api\CategoryLinkReposit
      */
     protected $productRepository;
 
+    /**
+     * @var \Magento\Catalog\Model\ResourceModel\Product
+     */
+    private $productResource;
+
     /**
      * @param \Magento\Catalog\Api\CategoryRepositoryInterface $categoryRepository
      * @param \Magento\Catalog\Api\ProductRepositoryInterface $productRepository
+     * @param \Magento\Catalog\Model\ResourceModel\Product $productResource
      */
     public function __construct(
         \Magento\Catalog\Api\CategoryRepositoryInterface $categoryRepository,
-        \Magento\Catalog\Api\ProductRepositoryInterface $productRepository
+        \Magento\Catalog\Api\ProductRepositoryInterface $productRepository,
+        \Magento\Catalog\Model\ResourceModel\Product $productResource = null
     ) {
         $this->categoryRepository = $categoryRepository;
         $this->productRepository = $productRepository;
+        $this->productResource = $productResource ?? \Magento\Framework\App\ObjectManager::getInstance()->get(\Magento\Catalog\Model\ResourceModel\Product::class);
     }
 
     /**
@@ -101,4 +110,44 @@ public function deleteByIds($categoryId, $sku)
         }
         return true;
     }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function deleteBySkus($categoryId, array $productSkuList)
+    {
+        $category = $this->categoryRepository->get($categoryId);
+        $products = $this->productResource->getProductsIdsBySkus($productSkuList);
+
+        if (!$products) {
+            throw new InputException(__("The category doesn't contain the specified products."));
+        }
+
+        $productPositions = $category->getProductsPosition();
+
+        foreach ($products as $productSku => $productId) {
+            if (isset($productPositions[$productId])) {
+                unset($productPositions[$productId]);
+            }
+        }
+
+        $category->setPostedProducts($productPositions);
+
+        try {
+            $category->save();
+        } catch (\Exception $e) {
+            throw new CouldNotSaveException(
+                __(
+                    'Could not save products "%products" to category %category',
+                    [
+                        "products" => implode(',', $productSkuList),
+                        "category" => $category->getId()
+                    ]
+                ),
+                $e
+            );
+        }
+
+        return true;
+    }
 }