[PostGIS] #6079: Remove support for GEOS < 3.10

[PostGIS]

#6079: Remove support for GEOS < 3.10
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  Reporter:  robe     |      Owner:  strk
      Type:  defect   |     Status:  assigned
  Priority:  medium   |  Milestone:  PostGIS 3.7.0
 Component:  postgis  |    Version:  3.6.x
Resolution:           |   Keywords:
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Comment (by strk):

 The NEWS file needs to report this as a breaking change too, in case it
 wasn't done already
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/6079#comment:1>
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