Delete local copy of configobj in favor of the pypi package

The "validate" module does come in the same pypi package.

.appveyor.yml

@@ -8,7 +8,7 @@ install:
     - choco install strawberryperl
     - copy %PYTHON%\python.exe %PYTHON%\python3.exe
     - SET PATH=%PYTHON%;C:\strawberry\c\bin;C:\strawberry\perl\site\bin;C:\strawberry\perl\bin;%PATH%
-    - python3 -mpip install Pillow attrs flake8 flake8-import-order py2exe pycotap pygame pysol-cards random2 six
+    - python3 -mpip install Pillow attrs configobj flake8 flake8-import-order py2exe pycotap pygame pysol-cards random2 six
     - perl -v
     - copy C:\msys64\mingw64\bin\mingw32-make.exe C:\msys64\mingw64\bin\make.exe
     - SET PATH=C:\strawberry\c\bin;C:\strawberry\perl\site\bin;C:\strawberry\perl\bin;%PATH%

.travis.yml

@@ -39,7 +39,7 @@ before_install:
 install:
     - sudo cpanm --notest Capture::Tiny
     - sudo cpanm Code::TidyAll::Plugin::Flake8 Perl::Tidy Test::Code::TidyAll Test::Differences Test::TrailingSpace
-    - export PY_MODS='attrs pycotap pysol-cards random2 six'
+    - export PY_MODS='attrs configobj pycotap pysol-cards random2 six'
     - "`which python3` -m pip install --upgrade flake8 flake8-import-order $PY_MODS"
     - "sudo /usr/bin/python3 -m pip install --upgrade $PY_MODS || true"
     - "sudo `which python2` -m pip install --upgrade $PY_MODS"

MANIFEST.in

@@ -7,7 +7,7 @@ include pysol.py setup.py setup_osx.py setup.cfg MANIFEST.in Makefile
 include COPYING README.md AUTHORS.md README.android README.kivy
 include NEWS.asciidoc
 #recursive-include pysollib *.py
-include pysollib/*.py pysollib/macosx/*.py pysollib/configobj/*.py
+include pysollib/*.py pysollib/macosx/*.py
 include pysollib/winsystems/*.py
 include pysollib/tk/*.py pysollib/tile/*.py pysollib/pysolgtk/*.py
 include pysollib/game/*.py

pysollib/options.py

@@ -25,9 +25,9 @@ import os
 import sys
 import traceback
 
+import configobj
 
 import pysollib.settings
-from pysollib.configobj import configobj, validate
 from pysollib.mfxutil import print_err
 from pysollib.mygettext import _
 from pysollib.pysoltk import TOOLBAR_BUTTONS, TOOLKIT
@@ -35,6 +35,8 @@ from pysollib.resource import CSI
 
 import six
 
+import validate
+
 # ************************************************************************
 # * Options
 # ************************************************************************

setup.py

@@ -73,7 +73,6 @@ kw = {
     'license': 'GPL',
     'scripts': ['pysol.py'],
     'packages': ['pysollib',
-                 'pysollib.configobj',
                  'pysollib.macosx',
                  'pysollib.winsystems',
                  'pysollib.tk',