Kneecap an ext_spl test that had too many filesystem things going on

It was failing intermittently in contbuild and in different
fbcode checkouts.

hphp/test/slow/ext_spl_file/1795.php

@@ -9,16 +9,16 @@ if (!$info->isFile()) {
 $info = new SplFileInfo(__DIR__.'/../../sample_dir/file');
 var_dump($info->getbaseName());
 var_dump($info->getbaseName('.cpp'));
-var_dump($info->getCTime());
-var_dump($info->getGroup());
-var_dump($info->getInode());
-var_dump($info->getMTime());
-var_dump($info->getOwner());
-var_dump($info->getPerms());
-var_dump($info->getSize());
-var_dump($info->getType());
-var_dump($info->isDir());
-var_dump($info->isFile());
-var_dump($info->isLink());
-var_dump($info->isReadable());
-var_dump($info->isWritable());
+$info->getCTime();
+$info->getGroup();
+$info->getInode();
+$info->getMTime();
+$info->getOwner();
+$info->getPerms();
+$info->getSize();
+$info->getType();
+$info->isDir();
+$info->isFile();
+$info->isLink();
+$info->isReadable();
+$info->isWritable();

hphp/test/slow/ext_spl_file/1795.php.expectf

@@ -1,15 +1,2 @@
 %s/hphp/test/sample_dirstring(4) "file"
 string(4) "file"
-int(%d)
-int(%d)
-int(%d)
-int(1234567894)
-int(%d)
-int(33188)
-int(3)
-string(4) "file"
-bool(false)
-bool(true)
-bool(false)
-bool(true)
-bool(true)