Removed deprecated methods in RescorerProvider

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@644 0d189622-dca1-7e23-9e30-e8815eb7bd2f
Use Math3 Pair class

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@645 0d189622-dca1-7e23-9e30-e8815eb7bd2f
Copy in FileLineIterable implementation

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@646 0d189622-dca1-7e23-9e30-e8815eb7bd2f