diff --git a/ext/date/tests/bug75577.phpt b/ext/date/tests/bug75577.phpt
deleted file mode 100644
index 2af5455061..0000000000
--- a/ext/date/tests/bug75577.phpt
+++ /dev/null
@@ -1,24 +0,0 @@
---TEST--
-Bug #75577 (DateTime::createFromFormat does not accept RFC3339_EXTENDED format)
---CREDITS--
-Mariano Iglesias <mariano@cricava.com>
---FILE--
-<?php
-date_default_timezone_set('America/Buenos_Aires');
-
-$date = DateTime::createFromFormat(DateTime::RFC3339_EXTENDED, '2017-06-03T00:08:10.881UTC');
-var_dump($date->format(DateTime::RFC3339_EXTENDED));
-var_dump($date->format('u'));
-var_dump($date->format('v'));
-
-$date = DateTime::createFromFormat(DateTime::RFC3339_EXTENDED, '2009-09-28T09:45:31.918-03:00');
-var_dump($date->format(DateTime::RFC3339_EXTENDED));
-var_dump($date->format('u'));
-var_dump($date->format('v'));
---EXPECT--
-string(29) "2017-06-03T00:08:10.881+00:00"
-string(6) "881000"
-string(3) "881"
-string(29) "2009-09-28T09:45:31.918-03:00"
-string(6) "918000"
-string(3) "918"