[PostGIS] #5525: Revert change of reliance on pg_file_settings for postgis_topology and postgis_tiger_geocoder

[PostGIS]

#5525: Revert change of reliance on pg_file_settings for postgis_topology and
postgis_tiger_geocoder
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  Reporter:  robe                   |      Owner:  strk
      Type:  defect                 |     Status:  assigned
  Priority:  medium                 |  Milestone:  PostGIS 3.3.5
 Component:  build/upgrade/install  |    Version:  3.3.x
Resolution:                         |   Keywords:  pgextwlist
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Comment (by Sandro Santilli <strk@…>):

 In [changeset:"8131a1d0b33ce2eb725a45f368bed67a732d8a7c/git"
 8131a1d0/git]:
 {{{#!CommitTicketReference repository="git"
 revision="8131a1d0b33ce2eb725a45f368bed67a732d8a7c"
 Remove duplicated AddToSearchPath implementation

 Use a common one, in new libpgcommon/sql directory.

 References #5525 in 3.3 branch
 }}}
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5525#comment:13>
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