package/python-remi: downgrade to 2020.8.6 and move to pypi

package/python-remi: downgrade to 2020.8.6 and move to pypi

Since
https://github.com/dddomodossola/remi/commit/481ee7ca3df55be127db35560978a36997a2c088

remi use setuptools-scm to obtain version, but .git directory is dropped when
the archive is fetched. The result is a build failure like:

Traceback (most recent call last):
  File "setup.py", line 22, in <module>
    include_package_data=True,
  File "/tmp/instance-0/output-1/host/lib/python2.7/site-packages/setuptools/__init__.py", line 145, in setup
    return distutils.core.setup(**attrs)
  File "/tmp/instance-0/output-1/host/lib/python2.7/distutils/core.py", line 111, in setup
    _setup_distribution = dist = klass(attrs)
  File "/tmp/instance-0/output-1/host/lib/python2.7/site-packages/setuptools/dist.py", line 448, in __init__
    k: v for k, v in attrs.items()
  File "/tmp/instance-0/output-1/host/lib/python2.7/distutils/dist.py", line 287, in __init__
    self.finalize_options()
  File "/tmp/instance-0/output-1/host/lib/python2.7/site-packages/setuptools/dist.py", line 740, in finalize_options
    ep.load()(self)
  File "/tmp/instance-0/output-1/host/lib/python2.7/site-packages/setuptools/dist.py", line 747, in _finalize_setup_keywords
    ep.load()(self, ep.name, value)
  File "/tmp/instance-0/output-1/host/lib/python2.7/site-packages/setuptools_scm/integration.py", line 17, in version_keyword
    dist.metadata.version = _get_version(config)
  File "/tmp/instance-0/output-1/host/lib/python2.7/site-packages/setuptools_scm/__init__.py", line 147, in _get_version
    parsed_version = _do_parse(config)
  File "/tmp/instance-0/output-1/host/lib/python2.7/site-packages/setuptools_scm/__init__.py", line 118, in _do_parse
    "use git+https://github.com/user/proj.git#egg=proj" % config.absolute_root
LookupError: setuptools-scm was unable to detect version for u'/tmp/instance-0/output-1/build/python-remi-2020.10.30'.

Make sure you're either building from a fully intact git repository or PyPI tarballs. Most other sources (such as GitHub's tarballs, a git checkout without the .git folder) don't contain the necessary metadata and will not work.

For example, if you're using pip, instead of https://github.com/user/proj/archive/master.zip use git+https://github.com/user/proj.git#egg=proj
make: *** [package/pkg-generic.mk:250: /tmp/instance-0/output-1/build/python-remi-2020.10.30/.stamp_built] Error 1
make: Leaving directory '/tmp/instance-0/buildroot'

Fix:
- http://autobuild.buildroot.net/results/3a6/3a62359d0e183d45e50e999fc2c58f7805bda142/

Signed-off-by: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
[Peter: drop _LICENSE_FILES, tarball does not include LICENSE file]
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>