Un-XFAIL FPM tests

These were XFAILed due to a bug in the log implementation that
caused intermittent failures. However, this issue is supposed to
be resolved in the meantime, so try dropping the XFAIL marker.

sapi/fpm/tests/log-bwd-multiple-msgs-stdout-stderr.phpt

@@ -2,8 +2,6 @@
 FPM: Buffered worker output decorated log with multiple continuous messages (stdout/stderr mixed)
 --SKIPIF--
 <?php include "skipif.inc"; ?>
---XFAIL--
-Fails regularly due to log line termination bug
 --FILE--
 <?php
 

sapi/fpm/tests/log-bwd-multiple-msgs.phpt

@@ -47,5 +47,3 @@ Done
 require_once "tester.inc";
 FPM\Tester::clean();
 ?>
---XFAIL--
-There are bugs in FPM