Integrated: 8267465: remove superfluous preview related annotations and test options

[Vicente Romero]

On Thu, 3 Jun 2021 04:55:39 GMT, Vicente Romero <vromero at openjdk.org> wrote:

> Please review this PR which is removing several superfluous `@SuppressWarnings("preview")` annotations from the compiler code and also removing preview related, but not needed anymore, options from regression tests.
> 
> TIA

This pull request has now been integrated.

Changeset: 4f9d6b7d
Author:    Vicente Romero <vromero at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/4f9d6b7d68312860d3e184a1f33687e1693d7d87
Stats:     111 lines in 33 files changed: 0 ins; 86 del; 25 mod

8267465: remove superfluous preview related annotations and test options

Reviewed-by: jlahoda

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PR: https://git.openjdk.java.net/jdk/pull/4330