CAMEL-19998: cleanup unused methods

[orpiske]

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[github-actions]

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[orpiske]

See https://issues.apache.org/jira/browse/CAMEL-20014 for the removal ticket.

[essobedo]

If you deprecate them to remove them later, maybe you should set the attribute forRemoval to true in your Deprecated annotations, WDYT?

[orpiske]

If you deprecate them to remove them later, maybe you should set the attribute forRemoval to true in your Deprecated annotations, WDYT?

That's a good suggestion, thanks! Let's do that.