[MacPorts] #56543: qt4-mac: Remove unneeded linker flags

[MacPorts]

#56543: qt4-mac: Remove unneeded linker flags
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  Reporter:  sideeffect42  |      Owner:  michaelld
      Type:  defect        |     Status:  closed
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:  fixed         |   Keywords:
      Port:  qt4-mac       |
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Comment (by michaelld):

 Awesome; thx!

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Ticket URL: <https://trac.macports.org/ticket/56543#comment:13>
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