Disable tox coverage reports.
Disable tox coverage reports.

Coverage reports reported by tox are not
collected properly and hence are harder to
read at a glance. We run coverage tests using
``make test`` anyway, so we'll continue to use
that command until this situation improves.

Signed-off-by: Gora Khargosh <a2078c57e3ac12c6dfb97b7c2c4e6d6d7db7e92f@gmail.com>

gorakhargosh/pyoauth,gorakhargosh/pyoauth