Changed redirection to refactored version in Boostbook collection

git-svn-id: http://svn.boost.org/svn/boost/trunk@85053 b8fc166d-592f-0410-95f2-cb63ce0dd405
Deleted old docs, leaving only re-factored Quickbook version.

git-svn-id: http://svn.boost.org/svn/boost/trunk@85054 b8fc166d-592f-0410-95f2-cb63ce0dd405