horsegen, zenno/convo: get all character names

cmd/horsegen/sql/character.sql

@@ -1,9 +1,6 @@
 SELECT
 	"index" AS "id",
-	"text" AS "name",
-	ROW_NUMBER() OVER (ORDER BY "index") - 1 AS "index"
+	"text" AS "name"
 FROM text_data
-WHERE category = 6 AND "index" BETWEEN 1000 AND 1999
-	-- Exclude characters who have no succession relations defined.
-	AND "index" IN (SELECT chara_id FROM succession_relation_member)
+WHERE category = 6
 ORDER BY "id"