[MacPorts] #64827: Remove a ban of gcc10 in mpi Port group

[MacPorts]

#64827: Remove a ban of gcc10 in mpi Port group
---------------------------+----------------------
  Reporter:  barracuda156  |      Owner:  mascguy
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.7.2
Resolution:                |   Keywords:  mpi
      Port:  mpich         |
---------------------------+----------------------
Changes (by jmroot):

 * component:  base => ports


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Ticket URL: <https://trac.macports.org/ticket/64827#comment:7>
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