Indexed DB: Remove vendor prefix removal from tests

LayoutTests/storage/indexeddb/resources/intversion-omit-parameter.js

 if (this.importScripts) {
     importScripts('../../../resources/js-test.js');
     importScripts('shared.js');
 }
 
 description("Test that initial version after a successful open of a non-existent db is 1");
 
 function test()
 {
-    removeVendorPrefixes();
     setDBNameFromPath();
 
     request = evalAndLog("indexedDB.deleteDatabase(dbname)");
     request.onsuccess = deleteSuccess;
     request.onerror = unexpectedErrorCallback;
 }
 
 function deleteSuccess(evt) {
     request = evalAndLog("indexedDB.open(dbname)");
     request.onsuccess = openSuccess;
     request.onerror = unexpectedErrorCallback;
     request.onblocked = unexpectedBlockedCallback;
     request.onupgradeneeded = function() {
       testPassed("Got upgradeneeded event");
     }
 }
 
 function openSuccess(evt)
 {
     event = evt;
     debug("");
     debug("openSuccess():");
     db = evalAndLog("db = event.target.result");
     debug("Test line from IDBFactory.open: If no version is specified and no database exists, set database version to 1.");
     shouldBe('db.version', '1');
     finishJSTest();
 }
 
 test();