Indexed DB: Remove vendor prefix removal from tests

LayoutTests/storage/indexeddb/mozilla/object-store-remove-values-expected.txt

 Test IndexedDB: adds, gets, deletes, and re-gets a record in a variety of different object store configurations
 
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
 
 
 data = [
         { name: 'inline key; key generator',
           autoIncrement: true,
           storedObject: {name: 'Lincoln'},
           keyName: 'id',
@@ skipping 13 matching lines @@
         },
         { name: 'out of line key; no key generator',
           autoIncrement: false,
           storedObject: {name: 'Lincoln'},
           keyName: undefined,
           keyValue: 1,
         }
     ];
 i = 0;
 
-indexedDB = self.indexedDB || self.webkitIndexedDB || self.mozIndexedDB || self.msIndexedDB || self.OIndexedDB;
-
 dbname = "object-store-remove-values.html"
 indexedDB.deleteDatabase(dbname)
 indexedDB.open(dbname)
 objectStore = db.createObjectStore(test.name, { keyPath: test.keyName, autoIncrement: test.autoIncrement });
 request = objectStore.add(test.storedObject);
 id = event.target.result;
 request = objectStore.get(id);
 PASS test.storedObject.name is event.target.result.name
 request = objectStore.delete(id);
 request = objectStore.get(id);
 PASS event.target.result === undefined is true
-indexedDB = self.indexedDB || self.webkitIndexedDB || self.mozIndexedDB || self.msIndexedDB || self.OIndexedDB;
-
 dbname = "object-store-remove-values.html"
 indexedDB.deleteDatabase(dbname)
 indexedDB.open(dbname)
 objectStore = db.createObjectStore(test.name, { keyPath: test.keyName, autoIncrement: test.autoIncrement });
 request = objectStore.add(test.storedObject);
 id = event.target.result;
 request = objectStore.get(id);
 PASS test.storedObject.name is event.target.result.name
 request = objectStore.delete(id);
 request = objectStore.get(id);
 PASS event.target.result === undefined is true
-indexedDB = self.indexedDB || self.webkitIndexedDB || self.mozIndexedDB || self.msIndexedDB || self.OIndexedDB;
-
 dbname = "object-store-remove-values.html"
 indexedDB.deleteDatabase(dbname)
 indexedDB.open(dbname)
 objectStore = db.createObjectStore(test.name, { autoIncrement: test.autoIncrement });
 request = objectStore.add(test.storedObject);
 id = event.target.result;
 request = objectStore.get(id);
 PASS test.storedObject.name is event.target.result.name
 request = objectStore.delete(id);
 request = objectStore.get(id);
 PASS event.target.result === undefined is true
-indexedDB = self.indexedDB || self.webkitIndexedDB || self.mozIndexedDB || self.msIndexedDB || self.OIndexedDB;
-
 dbname = "object-store-remove-values.html"
 indexedDB.deleteDatabase(dbname)
 indexedDB.open(dbname)
 objectStore = db.createObjectStore(test.name, { autoIncrement: test.autoIncrement });
 request = objectStore.add(test.storedObject, test.keyValue);
 id = event.target.result;
 request = objectStore.get(id);
 PASS test.storedObject.name is event.target.result.name
 request = objectStore.delete(id);
 request = objectStore.get(id);
 PASS event.target.result === undefined is true
 PASS successfullyParsed is true
 
 TEST COMPLETE