git: openjdk/jdk-sandbox: json: Removed URL from JsonNull - same spec URL cannot be multiple places

[duke]

Changeset: 8b5d350b
Branch: json
Author:    Naoto Sato <naoto.sato at oracle.com>
Date:      2026-01-14 13:32:33 +0000
URL:       https://git.openjdk.org/jdk-sandbox/commit/8b5d350b482a0c309d9f8359ac0201be3fe9558b

Removed URL from JsonNull - same spec URL cannot be multiple places

! src/java.base/share/classes/java/util/json/JsonNull.java
! src/java.base/share/classes/java/util/json/JsonObject.java
! src/java.base/share/classes/java/util/json/JsonString.java