Bug 11635: remove duplicate definition of 995$r in UNIMARC record.abs

Bug 11635: remove duplicate definition of 995$r in UNIMARC record.abs

Test plan :
- Create a fresh install UNIMARC flavor and GRS1 indexing for biblios
- Re-indexe database
- Perform a search with index "itemtype" (and then "itype") on an
  existing value of 995$r. For example : itemtype:BOOK
=> Check you get results

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>