You could use PHP’s unlink() method just as @Khan suggested.
But if you want to do it the Laravel way, use the File::delete() method instead.
// Delete a single file
File::delete($filename);
// Delete multiple files
File::delete($file1, $file2, $file3);
// Delete an array of files
$files = array($file1, $file2);
File::delete($files);
And don’t forget to add at the top:
use Illuminate\Support\Facades\File;