remove unused error from set_repository_options
remove unused error from set_repository_options

tpickett66/rugged,Acidburn0zzz/rugged,tpickett66/rugged,libgit2/rugged,saraid/rugged,Acidburn0zzz/rugged,libgit2/rugged,Acidburn0zzz/rugged,tpickett66/rugged,saraid/rugged,libgit2/rugged,saraid/rugged