Bug#1058970: pgxnclient: please remove extraneous stale dependency on python3-unittest2

[Alexandre Detiste]

Source: pgxnclient
Severity: normal

Dear Maintainer,

python3-unittest2 was a backport of Python3's "unittest"
module to Python2.

Upstream is now using the real "unittest".

Please remove the reference from debian/control.

Greetings