[TYPO3-mvc] How to properly delete a local file?

[Jan Kornblum]

Hi newsgroup,

how to properly delete a local file? The only thing i've found is:

\TYPO3\CMS\Core\Utility\GeneralUtility::unlink_tempfile()

...but this is only meant for deeleting temp-files. I must delete files 
in "uploads/tx_ext" etc.

Thanks in advance, Jan