Remove old segmentation code, move the segmenters files

* Removed old segmentation code
* Moved language specific segmenters to languages folder
* Added getSegmenter method to CXSegmenter to get the segmentation
  function for the given language

Change-Id: I49e1687526d06bd261c483ffa7bc63dc0805cd2a
Merge "Remove old segmentation code, move the segmenters files"