README.md: remove Compatibility section

This section duplicates data already stored in metadata.json (which is
displayed on Puppet Forge), so will inevitably become out of sync (as
it already is, since Puppet v6 is supported but not listed).

README.md

@@ -4,28 +4,6 @@ Puppet module for installing and managing python, pip, virtualenvs and Gunicorn
 
 **Please note:** The module [stankevich/python](https://forge.puppet.com/stankevich/python) has been deprecated and is now available under Vox Pupuli: [puppet/python](https://forge.puppet.com/puppet/python).
 
-## Compatibility #
-
-See `.travis.yml` for compatibility matrix.
-
-* Puppet v4
-* Puppet v5
-
-### OS Distributions ##
-
-This module has been tested to work on the following systems.
-
-* Debian 8
-* Debian 9
-* EL 6
-* EL 7
-* CentOS 7
-* Gentoo (and Sabayon)
-* Suse 11
-* Ubuntu 14.04
-* Ubuntu 16.04
-* Ubuntu 18.04
-
 ## Usage
 For class usage refer to the [Reference]("https://github.com/voxpupuli/puppet-python/blob/master/REFERENCE.md). If contributing, this is updated with
 ```shell