[MacPorts] #58935: go @1.13: build fails on 10.9 and less

[MacPorts]

#58935: go @1.13: build fails on 10.9 and less
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  Reporter:  kencu   |      Owner:  ci42
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:  lion mountainlion
      Port:  go      |
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Comment (by Ionic):

 I believe so, yes.

 We can just drop the additional patch and the legacy env setting stuff if
 all users are expected to upgrade to the new release right after
 availability and ports will only be parsed by the new base version.

 I'll get working on that after... updating my system.

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Ticket URL: <https://trac.macports.org/ticket/58935#comment:5>
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