Don't test "blocks" in lstat_stat_variation7.phpt

This stat property seems to be somewhat unreliable depending on the
filesystem. On Travis ARM64 CI a much larger payload is required
to get this value to increase.

Author: nikic

ext/standard/tests/file/lstat_stat_variation7.phpt

@@ -36,7 +36,7 @@ $new_stat = stat($file_name);
 var_dump( compare_self_stat($old_stat) );
 var_dump( compare_self_stat($new_stat) );
 // compare the stats
-$comp_arr = array(7, 12, 'size', 'blocks');
+$comp_arr = array(7, 'size');
 var_dump(compare_stats($old_stat, $new_stat, $comp_arr, "<"));
 clearstatcache();