[MacPorts] #53846: erlang @19.2: update to 19.3

[MacPorts]

#53846: erlang @19.2: update to 19.3
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  Reporter:  l2dy    |      Owner:  ci42
      Type:  update  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:  erlang  |
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Comment (by graffic):

 I've found that at least in 19.3 Makefile there is no need to use
 reinplace to remove the destroot and leave the prefix. The makefile does
 it.

 I've attached a second diff with both changes.

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Ticket URL: <https://trac.macports.org/ticket/53846#comment:2>
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