[MacPorts] #56357: Remove py35/36 subports incorrectly added in 6c05e98

[MacPorts]

#56357: Remove py35/36 subports incorrectly added in 6c05e98
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  Reporter:  jmroot                              |      Owner:  mojca
      Type:  defect                              |     Status:  assigned
  Priority:  Normal                              |  Milestone:
 Component:  ports                               |    Version:
Resolution:                                      |   Keywords:
      Port:  py-unittest2 py-typing py-pywcs     |
  py-pyfits py-obspy-devel py-backports_abc py-  |
  backports py-backports-ssl_match_hostname py-  |
  asdf-devel py-asciitable                       |
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Comment (by ryandesign):

 In these situations, it would be good to add a comment line above the
 `python.versions` line, explaining why newer versions are not to be listed
 there. Otherwise someone else will just erroneously re-add them again
 later.

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Ticket URL: <https://trac.macports.org/ticket/56357#comment:2>
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