Client: Simplify PG12/Postgis 3 interaction

client/sql/05_utils.sql

@@ -18,16 +18,3 @@ $func$ LANGUAGE plpgsql;
 CREATE OR REPLACE FUNCTION cdb_dataservices_client.cdb_jsonb_array_casttext(jsonb) RETURNS text[] AS $f$
     SELECT array_agg(x) || ARRAY[]::text[] FROM jsonb_array_elements_text($1) t(x);
 $f$ LANGUAGE sql IMMUTABLE;
-
-
--- PG12_DEPRECATED
--- Create geomval if it doesn't exist (in postgis 3+ it only exists in postgis_raster)
-DO $$
-BEGIN
-    IF NOT EXISTS (SELECT 1 FROM pg_type WHERE typname = 'geomval') THEN
-        CREATE TYPE cdb_dataservices_client.geomval AS (
-            geom geometry,
-            val double precision
-        );
-    END IF;
-END$$;