How to remove the automatically inserted text from the body of an email sent from Acrobat Reader

I am asking for advice on how to remove the automatically inserted text from the body of an email sent from Acrobat Reader:

"The PDF file can be found in the attachment .
Download the free Adobe Acrobat Reader to easily view and comment on this PDF file - https://www.adobe.com/go/reader_download_cz 

Submitted from Adobe Acrobat Reader"