Drop rpm packaging

We're going to drop python2 support.
Drop rpm python packaging util someone make a python3 rpm packaging.

python-logilab-mtconverter.spec

-# for el5, force use of python2.6
-%if 0%{?el5}
-%define python python26
-%define __python /usr/bin/python2.6
-%else
-%define python python
-%define __python /usr/bin/python
-%endif
-%{!?_python_sitelib: %define _python_sitelib %(%{__python} -c "from distutils.sysconfig import get_python_lib; print get_python_lib()")}
-
-%define project_name logilab-mtconverter
-%define project_version 0.9.0
-
-Name:           %{python}-%{project_name}
-Version:        %{project_version}
-Release:        logilab.1%{?dist}
-Summary:        a library to convert from a MIME type to another
-
-Group:          Development/Languages/Python
-License:        LGPLv2+
-Vendor:         Logilab <contact@logilab.fr>
-URL:            http://www.logilab.org/project/%{project_name}
-Source0:        http://download.logilab.org/pub/mtconverter/%{project_name}-%{version}.tar.gz
-BuildArch:      noarch
-BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-buildroot
-
-BuildRequires:  %{python}
-BuildRequires:  %{python}-setuptools
-Requires:       %{python}
-Requires:       %{python}-setuptools
-Requires:       %{python}-six
-Requires:       %{python}-html2text
-Requires:       %{python}-logilab-common >= 0.55.2
-Requires:       %{python}-lxml
-
-
-%description
-This package originally a backport of Zope's PortalTransforms tool with
-all Zope's internal removed (i.e. most of the code).
-
-%prep
-%setup -n %{project_name}-%{version}
-
-%build
-%{__python} setup.py build
-%if 0%{?el5}
-# change the python version in shebangs
-find . -name '*.py' -type f -print0 |  xargs -0 sed -i '1,3s;^#!.*python.*$;#! /usr/bin/python2.6;'
-%endif
-
-%install
-rm -rf $RPM_BUILD_ROOT
-%{__python} setup.py install -O1 --skip-build --root="$RPM_BUILD_ROOT"
-rm -rf $RPM_BUILD_ROOT%{_python_sitelib}/logilab/__init__.py*
-
-%clean
-rm -rf $RPM_BUILD_ROOT
-
-%files
-%defattr(-, root, root)
-%doc README ChangeLog COPYING.LESSER
-%{_python_sitelib}/logilab*