No longer pass option argument to db_delete().

Ontime Ticket: #1100
Identified Issues:
 When deleting a style you get the following ERROR: Recoverable fatal error:
 Argument 2 passed to db_delete() must be an array, string given, called in
 /var/www/html/drupal-7.15/sites/all/modules/islandora_scholar/modules/csl/includes/csl.inc
 on line 225 and defined in db_delete() (line 2448 of
 /var/www/html/drupal-7.15/includes/database/database.inc).
Merge pull request #25 from nigelgbanks/7.x-csl-issue

No longer pass option argument to db_delete().