fixed AQLRunner example contained non-existing method

[wintersolutions]

A reference to the getOlder(int) derived query on the CharacterRepository interface made even the JDK grow grey hair. Removed misleading code.

[cla-bot]

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[cla-bot]

Fresh avocado detected! Welcome and thank you for your contribution @wintersolutions. My avocado-loving overlords have decreed a signed CLA is required for PRs. Please see https://github.com/arangodb/arangodb/blob/devel/CONTRIBUTING.md file to learn more or ask @cw00dw0rd if you have issues.