Update python-Flask-HTMLmin to version 2.2.1 / rev 8 via SR 1140735
    
    https://build.opensuse.org/request/show/1140735
    by user dirkmueller + anag+factory
    - update to 2.2.1:
      * Stop using pytest-runner
      * Fix documentation error in README
      * Fix https://github.com/hamidfzm/Flask-HTMLmin/issues/30 by
        @hamidfzm
    - switch to PEP517 build
    - drop remove-pytest-runner.patch (upstream)
    
      * No longer require pytest-runner.