MC-18332: Remove MySQL Search Engine

- removing deprecated code

Author: cpartica

app/code/Magento/CatalogGraphQl/Model/Category/CategoryFilter.php

@@ -13,7 +13,6 @@
 use Magento\Framework\Exception\InputException;
 use Magento\Framework\GraphQl\Exception\GraphQlInputException;
 use Magento\Framework\GraphQl\Query\Resolver\Argument\SearchCriteria\ArgumentApplier\Filter;
-use Magento\Framework\Search\Adapter\Mysql\Query\Builder\Match;
 use Magento\Search\Model\Query;
 use Magento\Store\Api\Data\StoreInterface;
 use Magento\Store\Model\ScopeInterface;
@@ -24,6 +23,11 @@
  */
 class CategoryFilter
 {
+    /**
+     * @var string
+     */
+    private const SPECIAL_CHARACTERS = '-+~/\\<>\'":*$#@()!,.?`=%&^';
+
     /**
      * @var ScopeConfigInterface
      */
@@ -120,7 +124,7 @@ private function formatMatchFilters(array $filters, StoreInterface $store): arra
         foreach ($filters as $filter => $condition) {
             $conditionType = current(array_keys($condition));
             if ($conditionType === 'match') {
-                $searchValue = trim(str_replace(Match::SPECIAL_CHARACTERS, '', $condition[$conditionType]));
+                $searchValue = trim(str_replace(self::SPECIAL_CHARACTERS, '', $condition[$conditionType]));
                 $matchLength = strlen($searchValue);
                 if ($matchLength < $minQueryLength) {
                     throw new InputException(__('Invalid match filter. Minimum length is %1.', $minQueryLength));

app/code/Magento/CatalogGraphQl/Model/Search/Adapter/Mysql/Query/Builder/Match.php

@@ -91,8 +91,6 @@
             </argument>
         </arguments>
     </virtualType>
-    <preference for="Magento\Framework\Search\Adapter\Mysql\Query\Builder\Match"
-                type="Magento\CatalogGraphQl\Model\Search\Adapter\Mysql\Query\Builder\Match" />
     <type name="Magento\StoreGraphQl\Model\Resolver\Store\StoreConfigDataProvider">
         <arguments>
             <argument name="extendedConfigData" xsi:type="array">