dropbox is not shown any more, remove appology

README.md

@@ -85,11 +85,6 @@ The backend API for managing project tags (folders).
 
 An API for running server-side spelling checking on ShareLaTeX documents.
 
-Dropbox
--------
-
-Please note that certain features like Dropbox integration are not functional in the open source code base yet, despite appearing in the user interface. We're working on this, sorry!
-
 Contributing
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