Remove distinction between single and multiple attachments.

[robindijkhof]

When a user decides to use Google Drive instead of a mail client to open the intent, the subject becomes the file name. This is obviously incorrect because it removes the extension of the file. Removing these lines solves this problem. I'm not sure why they were there.

[taljacobson]

thank you for the PR.

ill try to check it out soon.
to make sure there are no adverse effect, the work flow of adding to google drive is not the main flow this package is design/used for.

[robindijkhof]

I understand, but af er all it is just an Intent with files attached. The user should be able to open that intent what any app that supports the Intent.