Fixes spec related to latest changes

spec/fixtures/db/wordpresses.json

@@ -19,7 +19,6 @@
        {
         "references" : {
           "cve" : ["2014-0166"],
-          "osvdb" : ["10"],
           "url" : ["url-2","url-3"]
         },
         "fixed_in" : "3.8.2",
@@ -36,8 +35,7 @@
     "vulnerabilities" : [
       {
         "references": {
-          "url" : ["url-4"],
-          "osvdb" : ["11"]
+          "url" : ["url-4"]
         },
         "created_at" : "2014-08-01T10:58:19.000Z",
         "updated_at" : "2014-09-16T15:45:26.000Z",