[lworld] RFR: 8373896: [lworld] Remove now-dead preview patching code

[Roger Riggs]

On Wed, 17 Dec 2025 16:55:15 GMT, David Beaumont <duke at openjdk.org> wrote:

> Removing code guarded by now obsolete preview patching property.
> This should be a no-op functionally.
> Some minor tidying around arguments.cpp since now there's no reason to init the jimage file in the module patching code.

Looks good.

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Marked as reviewed by rriggs (Committer).

PR Review: https://git.openjdk.org/valhalla/pull/1819#pullrequestreview-3588855224