[Validator] Remove comment to GitHub issue

Author: OskarStark

Constraints/CollectionValidator.php

@@ -50,7 +50,6 @@ public function validate(mixed $value, Constraint $constraint)
         $context = $this->context;
 
         foreach ($constraint->fields as $field => $fieldConstraint) {
-            // bug fix issue #2779
             $existsInArray = \is_array($value) && \array_key_exists($field, $value);
             $existsInArrayAccess = $value instanceof \ArrayAccess && $value->offsetExists($field);