Factoring out []2 artefacts from the transport security interface.

- Looks like we should have cleaned this header before... I don't think it's a
big deal though...
- Removing the tests from the opensource package as well (these are very much
[] specific for now).
	Change on 2015/01/12 by jboeuf <jboeuf@google.com>
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Created by MOE: http://code.google.com/p/moe-java
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