Change 'cl_napalm_configure' reference in setup.py, remove redundant setup

[jzohrab]

cl_napalm_configure currently fails:

Traceback (most recent call last):
  File "/usr/local/bin/cl_napalm_configure", line 9, in <module>
    load_entry_point('napalm==1.0.1', 'console_scripts', 'cl_napalm_configure')()
  File "/Library/Python/2.7/site-packages/pkg_resources/__init__.py", line 542, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/Library/Python/2.7/site-packages/pkg_resources/__init__.py", line 2569, in load_entry_point
    return ep.load()
  File "/Library/Python/2.7/site-packages/pkg_resources/__init__.py", line 2229, in load
    return self.resolve()
  File "/Library/Python/2.7/site-packages/pkg_resources/__init__.py", line 2235, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
ImportError: No module named clitools.cl_napalm_configure

The cl_napalm_configure alias is currently set in both this repo and napalm-base:

https://github.com/napalm-automation/napalm/blob/develop/setup.py#L31:
'cl_napalm_configure=napalm.clitools.cl_napalm_configure:main',

https://github.com/napalm-automation/napalm-base/blob/develop/setup.py#L33:
'cl_napalm_configure=napalm.clitools.cl_napalm_configure:main',

The clitools exist in napalm_base, so I believe it should be removed from the napalm repo, and fixed in the napalm-base repo.