RFR: JDK-8307123: Fix deprecation warnings in DPrinter

[Vicente Romero]

On Mon, 1 May 2023 22:56:12 GMT, Jonathan Gibbons <jjg at openjdk.org> wrote:

> Please review a trivial test clean to fix some deprecation warnings in the test/langtools DPrinter class.

looks good

-------------

Marked as reviewed by vromero (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/13747#pullrequestreview-1408338632