Just completely remove tubleweed ci workflow instead

Author: jonathangreen

.github/workflows/opensuse-tumbleweed.yml

@@ -14,8 +14,6 @@ python-xmlsec
    :target: https://github.com/mehcode/python-xmlsec/actions/workflows/macosx.yml
 .. image:: https://github.com/mehcode/python-xmlsec/actions/workflows/linuxbrew.yml/badge.svg
    :target: https://github.com/mehcode/python-xmlsec/actions/workflows/linuxbrew.yml
-.. image:: https://github.com/mehcode/python-xmlsec/actions/workflows/opensuse-tumbleweed.yml/badge.svg
-   :target: https://github.com/mehcode/python-xmlsec/actions/workflows/opensuse-tumbleweed.yml
 .. image:: https://codecov.io/gh/xmlsec/python-xmlsec/branch/master/graph/badge.svg
    :target: https://codecov.io/gh/xmlsec/python-xmlsec
 .. image:: https://img.shields.io/readthedocs/xmlsec/latest?logo=read-the-docs