[PostGIS] #5852: Remove topogeo_addlinestring_expected from the .gitignore

[PostGIS]

#5852: Remove topogeo_addlinestring_expected from the .gitignore
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  Reporter:  evsi         |      Owner:  strk
      Type:  enhancement  |     Status:  closed
  Priority:  low          |  Milestone:  PostGIS 3.5.3
 Component:  topology     |    Version:  3.0.x
Resolution:  fixed        |   Keywords:
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Changes (by strk):

 * version:  3.4.x => 3.0.x

Comment:

 Thanks a lot for your research, evsi
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5852#comment:9>
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