Remove PHP < 7.1.3 code

Author: ogizanagi

Tests/Resource/ReflectionClassResourceTest.php

@@ -124,12 +124,8 @@ public function provideHashedSignature()
         yield array(0, 8, '/** priv docblock */');
         yield array(0, 9, 'private $priv = 123;');
         yield array(1, 10, '/** pub docblock */');
-        if (PHP_VERSION_ID >= 50600) {
-            yield array(1, 11, 'public function pub(...$arg) {}');
-        }
-        if (PHP_VERSION_ID >= 70000) {
-            yield array(1, 11, 'public function pub($arg = null): Foo {}');
-        }
+        yield array(1, 11, 'public function pub(...$arg) {}');
+        yield array(1, 11, 'public function pub($arg = null): Foo {}');
         yield array(0, 11, "public function pub(\$arg = null) {\nreturn 123;\n}");
         yield array(1, 12, '/** prot docblock */');
         yield array(1, 13, 'protected function prot($a = array(123)) {}');