[MacPorts] #56379: root5: remove +clang35 +clang36 variants

[MacPorts]

#56379: root5: remove +clang35 +clang36 variants
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  Reporter:  dbevans  |      Owner:  cjones051073
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  root5    |
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Comment (by cjones051073):

 I first want to make sure no ports in MacPorts still use root5, and if
 there are get them motivated to migrate to root6. But then, yes, it would
 be time to think about obsoleting root5.

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Ticket URL: <https://trac.macports.org/ticket/56379#comment:8>
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