Remove github.com/cockroachdb/apd test dependency

query_test.go

@@ -13,7 +13,6 @@ import (
 	"testing"
 	"time"
 
-	"github.com/cockroachdb/apd"
 	"github.com/gofrs/uuid"
 	"github.com/jackc/pgx/v5"
 	"github.com/jackc/pgx/v5/pgconn"
@@ -1217,7 +1216,7 @@ func TestConnQueryDatabaseSQLDriverValuerWithAutoGeneratedPointerReceiver(t *tes
 
 	mustExec(t, conn, "create temporary table t(n numeric)")
 
-	var d *apd.Decimal
+	var d *sql.NullInt64
 	commandTag, err := conn.Exec(context.Background(), `insert into t(n) values($1)`, d)
 	if err != nil {
 		t.Fatal(err)