Revert commit to fix double title issue for biblio.  

Revert commit ee5ac3d

The commit actually did more harm than good, introduces bugs on other citation styles outside of the ones it fixes...  Tried looking at future (dev)/current (rc5) of biblio and both still contain the bugs.  The one's it introduces bugs into are the more popular citation styles (Chicago for instance).  

Starting over from scratch to fix this issue seems like a better idea.  

Related to #2286.