Revert "new doc page for public file upload"

user_manual/file-upload-via-public-link.rst

@@ -1,21 +0,0 @@
-===========================
-File Upload via Public Link
-===========================
-
-You can allow people to upload files via public link without letting them see the files stored in the folder.
-
-* create a folder
-* create a public link for that folder and check "allow editing" and then "hide file listing"
-
-To create a folder, click the + and choose a name, e.g. publicupload
-
-.. figure:: images/files-public-upload-create-folder
-
-You have to share the folder by clicking the share icon. In the right sidebar click the checkbox "allow editing". Another checkbox with the name "hide file listing" will appear, check it!
-
-.. figure:: images/files-public-upload-sharing
-
-Copy the link and send it to the person who should upload files.
-When the link is opened in a browser, the person will see the avatar and username of the user who shared the folder. Files can be uploaded by selecting or dropping them.
-
-.. figure:: images/files-public-upload-visitor