refactor(filefield): remove unused method

Author: btry

inc/field/filefield.class.php

@@ -200,21 +200,6 @@ public static function canRequire(): bool {
       return true;
    }
 
-   public function saveUploads($input) {
-      $key = 'formcreator_field_' . $this->question->getID();
-      $index = 0;
-      $answer_value = [];
-      foreach ($input["_$key"] as $document) {
-         $document = Toolbox::stripslashes_deep($document);
-         if (is_file(GLPI_TMP_DIR . '/' . $document)) {
-            $prefix = $input['_prefix_' . $key][$index];
-            $answer_value[] = $this->saveDocument($document, $prefix);
-         }
-         $index++;
-      }
-      $this->uploadData = $answer_value;
-   }
-
    public function hasInput($input): bool {
       // key with unserscore when testing unput from a requester
       // key without underscore when testing data from DB (display a saved answer)