Enable test for PHP 7.0

Author: pepakriz

tests/PHPStan/Analyser/NodeScopeResolverTest.php

@@ -3312,7 +3312,6 @@ public function dataArrayAccess(): array
 }
 
 /**
- * @requires PHP 7.1
  * @dataProvider dataArrayAccess
  * @param string $description
  * @param string $expression

tests/PHPStan/Analyser/data/array-accessable.php

@@ -1,4 +1,4 @@
-<?php // lint >= 7.1
+<?php
 
 namespace ArrayAccesable;