Assorted minor build cleanups

The -q in `setup.py test -q` does nothing.

The -q in `setup.py -q test` makes the build quiet before running the
tests.

The testing extra was a weird thing, not used anywhere.  Also nose is
abandoned upstream.

Depending on . in a tox.ini makes no sense, since tox always installs
the current package.  I can only assume it was .[test] or something in
the past and wasn't cleaned up cleanly when the test extra became empty.

appveyor.yml

@@ -34,7 +34,7 @@ build_script:
   - python -W ignore setup.py -q bdist_wheel
 
 test_script:
-  - python setup.py test -q
+  - python setup.py -q test
 
 artifacts:
   - path: 'dist\*.whl'

setup.py

@@ -78,7 +78,6 @@
     ext_modules=ext_modules,
     extras_require={
         'test': [],
-        'testing': ['nose', 'coverage'],
     },
     test_suite='zodbpickle.tests.test_pickle.test_suite',
     install_requires=[

tox.ini

@@ -6,9 +6,8 @@ envlist = py27,py35,py36,py37,py38,pypy,pypy3,coverage-report
 [testenv]
 usedevelop = True
 commands =
-    coverage run setup.py test -q
+    coverage run setup.py -q test
 deps =
-    .
     coverage
 setenv =
     COVERAGE_FILE=.coverage.{envname}