refactor: merge tenant configuration into tenant registry

server/internal/logic/sys/im_tenant_tables.go

@@ -12,17 +12,6 @@ import (
 
 const imTenantIDSequenceTable = "im_tenant_id_sequence"
 
-func sharedDatabaseConfig(ctx context.Context) (dbName, dbDSN string, err error) {
-	row, err := imtenant.RegistryDB().GetOne(ctx, "SELECT db_name,db_dsn FROM im_tenant WHERE code='default' LIMIT 1")
-	if err != nil {
-		return "", "", gerror.Wrap(err, "获取共享业务库配置失败")
-	}
-	if row.IsEmpty() {
-		return "", "", gerror.New("默认商户不存在，无法确定共享业务库")
-	}
-	return row["db_name"].String(), row["db_dsn"].String(), nil
-}
-
 func ensureTenantIDSequence(ctx context.Context) error {
 	db := imtenant.RegistryDB()
 	if _, err := db.Exec(ctx, `CREATE TABLE IF NOT EXISTS im_tenant_id_sequence (