Revert "fixed NCBO-246 - /search should handle jQuery ajax request (for search autocomplete fields in UI)"

This reverts commit 8f9780942202187aafa4c83deff5a3d75d789499.
Revert "fixed NCBO-241 - Autocomplete missing terms"

This reverts commit 466b1427f0351498c0ec70c6bbd9ed3d4afe51e9.