getMd5() and getSha1() are unrelated

[bantu]

getMd5() and getSha1() are unrelated to the problem of getting the filesize of big files and thus should not be part of BigFileTools.

[jkuchar]

Yes, definitely they are unrelated to getting filesize on huge file. But shoudn't this class be kind of file representation, that can be used insted of lets say http://php.net/manual/en/class.splfileobject.php? Makes sense to extend that class and override non functional parts? Otherwise project name should be changed. Makes that sense? Thanks!

[jkuchar]

Removed in dev-branch.