Removed @psalm-param array{...} annotations

These annotations were too specific, since the returned type would never match anyway.

Specifically, psalm cannot yet declare `ArrayType1&ArrayType2`, so an union type of two
arrays is not currently something we can declare explicitly.

Ref: #3402 (comment)

src/JsonSchema/TypeFactory.php

@@ -159,10 +159,6 @@ private function getClassType(?string $className, string $format = 'json', ?bool
      * @param array<string, mixed> $jsonSchema
      *
      * @return array<string, mixed>
-     *
-     * @psalm-param array{type=: string|list<string>} $jsonSchema
-     *
-     * @psalm-return array{type=: string|list<string>, $ref=: string}
      */
     private function addNullabilityToTypeDefinition(array $jsonSchema, Type $type) : array
     {