Removed parameter that no longer exists for.

OnTime: #1332 HOCR Bounding Box "Deduplication"

Removed unused $solr_params option for the function:

islandora_ocr_map_highlighted_solr_results_to_bounding_boxes().
Merge pull request #16 from nigelgbanks/7.x-dedup-solr-snippets

Removed parameter that no longer exists for.