git: openjdk/leyden: computed-constants: Remove the use of a proposed-to-be deprecated method

[duke]

Changeset: 75431003
Author:    Per Minborg <pminborg at gmail.com>
Date:      2023-09-11 08:25:48 +0000
URL:       https://git.openjdk.org/leyden/commit/754310039b5b1601bc93a840b3daca2fc6b205df

Remove the use of a proposed-to-be deprecated method

! src/java.base/share/classes/jdk/internal/constant/AbstractComputedConstant.java