removed duplicated requirements

Author: dea

setup.py

@@ -29,20 +29,6 @@ def run(self):
     description='The SimPhoNy documentation',
     keywords='simphony, documentation, sphinx, cuds, Fraunhofer IWM',
     long_description=README_TEXT,
-    install_requires=[
-        'osp-core>=' + OSP_CORE_MIN + ', <' + OSP_CORE_MAX,
-        'sphinx',
-        'recommonmark',
-        'sphinxcontrib-plantuml',
-        'nbsphinx',
-        'sphinx-copybutton',
-        'sphinx-jsonschema',
-        'sphinx_rtd_theme',
-        'ipython',
-    ],
-    setup_requires=[
-        'sphinx',
-    ],
     cmdclass={'install': CustomBuild},
     command_options={
         'install': {