test(spec): remove obsolete extra search path from postgis tests

This was brought over in the last commit, because the postgis was
re-using the same config as another test. Now it has a separate config,
so we can reduce it a bit.

test/spec/Feature/Query/PostGISSpec.hs

@@ -11,7 +11,7 @@ import Protolude  hiding (get)
 import SpecHelper
 
 spec :: SpecWithConfig
-spec withConfig = withConfig (baseCfg { configDbExtraSearchPath = ["public", "extensions", "EXTRA \"@/\\#~_-"] }) $ describe "PostGIS features" $
+spec withConfig = withConfig (baseCfg { configDbExtraSearchPath = ["public", "extensions"] }) $ describe "PostGIS features" $
   context "GeoJSON output" $ do
     it "works for a table that has a geometry column" $
       request methodGet "/shops"