Remove unused dependencies from requirements.txt/setup.py

docs/source/index.rst

@@ -43,7 +43,6 @@ python-keycloak depends on:
 * Python 3
 * `requests <http://docs.python-requests.org/en/master/>`_
 * `python-jose <http://python-jose.readthedocs.io/en/latest/>`_
-* `simplejson <https://simplejson.readthedocs.io/en/latest/>`_
 
 Tests Dependencies
 ------------------

requirements.txt

@@ -1,4 +1,3 @@
 requests>=2.18.4
 httmock>=1.2.5
 python-jose>=1.4.0
-simplejson

setup.py

@@ -17,7 +17,8 @@ setup(
     long_description=long_description,
     long_description_content_type="text/markdown",
     packages=['keycloak', 'keycloak.authorization', 'keycloak.tests'],
-    install_requires=['requests==2.18.4', 'httmock==1.2.5', 'python-jose==1.4.0', 'simplejson'],
+    install_requires=['requests==2.18.4', 'python-jose==1.4.0'],
+    tests_require=['httmock==1.2.5'],
     classifiers=[
         'Programming Language :: Python :: 3',
         'License :: OSI Approved :: MIT License',