Author: Ian Fijolek
Revision Date: 2020-02-15 08:16:58 UTC

Fix bytes/str error in b2 backend on Python 3

A nearly identical bug to #1863018 also affects the B2
backend. This is a very similar patch to the one just
merged that fixes it.

The quote_plus function is removed as it no longer appears
to be required. At least not with the latest b2 and in
Python 3. When it is present, a FileNotFound exception is
thrown because the / in the path gets double encoded.