[python] Delete setup scripts

python/CMakeLists.txt

 add_subdirectory(dumux)
-configure_file(setup.py.in setup.py)
 
 # link properties.hh needed by the Python bindings
 # to determine the list of properties

python/setup-python-env.sh

-#!/bin/bash
-# Adds all Python modules found in other Dune modules to the PYTHONPATH
-./dune-common/bin/dunecontrol bexec "echo -n :\$(pwd)/python >> $(pwd)/pythonpath.txt"
-export PYTHONPATH=$PYTHONPATH$(cat pythonpath.txt)
-rm pythonpath.txt
-# Sets up the dune-py module for JIT compilation of Python binding code
-./dune-common/bin/setup-dunepy.py --opts=cmake.opts install

python/setup.py.in

-from setuptools import setup, find_packages
-
-REQUIRED_PACKAGES = '${RequiredPythonModules}'.replace(';',' ').split(' ')
-
-setup(
-    name="${ProjectName}",
-    description="${ProjectDescription}",
-    version="${ProjectVersionString}",
-    author="${ProjectAuthor}",
-    author_email="${ProjectMaintainerEmail}",
-    packages=find_packages(),
-    zip_safe=0,
-    package_data={"": ["*.so"], "dumux": ["data/*.cmake"]},
-    install_requires=REQUIRED_PACKAGES,
-    include_package_data=True,
-)