Revert "fixup! Y client: Fix URI scheme to move credentials out of query"

This reverts commit cf685fb5. This used
to be a divergence between NEO/py and NEO/go, however in nexedi/neoppod!18 and
nexedi/neoppod!21 a common
solution for a zurl format was found. This common format keeps
credentials in the query, therefore we should revert patch
cf685fb5.

neo/client/zodburi.py

@@ -84,7 +84,6 @@ def _resolve_uri(uri):
         if scheme != "neos":
             raise ValueError("invalid uri: %s : credentials can be specified only with neos:// scheme" % uri)
         # ca=ca.crt;cert=my.crt;key=my.key
-        cred = cred.replace(';', '&') # ; is no longer in default separators set bugs.python.org/issue42967
         for k, v in OrderedDict(parse_qsl(cred)).items():
             if k not in _credopts:
                 raise ValueError("invalid uri: %s : unexpected credential %s" % (uri, k))