[MacPorts] #46125: ccm: update to 2.0.1; use github portgroup normally

[MacPorts]

#46125: ccm: update to 2.0.1; use github portgroup normally
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 Reporter:  ryandesign@…  |      Owner:  blair@…
     Type:  update        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.3.99
 Keywords:  haspatch      |       Port:  ccm
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 This patch updates ccm to 2.0.1 and removes unnecessary overrides of
 github portgroup standard behavior.

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Ticket URL: <https://trac.macports.org/ticket/46125>
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