Remove unnecessary auditorAwareRef from test config.

[mikereiche]

Remove unnecessary auditorAwareRef from test config as it causes
confusion. The property does not need to be preset for the auditorAwareRef
bean to be used.
The dateTimeProviderRef must be present for the provided
dateTimeProviderRef bean to be used.
Fixed up the test cases so they no longer work by accident.

Closes #1052.

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