ntp: remove dead first run code

chrome/test/startup/feature_startup_test.cc

Index: chrome/test/startup/feature_startup_test.cc
diff --git a/chrome/test/startup/feature_startup_test.cc b/chrome/test/startup/feature_startup_test.cc
index b554b0ac5fd1452a63d97243c86a763f6f45119d..9ad003b64f8c9cdbae2d759d00af4010a9656749 100644
--- a/chrome/test/startup/feature_startup_test.cc
+++ b/chrome/test/startup/feature_startup_test.cc
@@ -46,10 +46,6 @@ class NewTabUIStartupTest : public UIPerfTest {
     // Install the location of the test profile file.
     set_template_user_data(UITest::ComputeTypicalUserDataSource(
         profile_type));
-
-    // Disable the first run notification because it has an animation which
-    // masks any real performance regressions.
-    launch_arguments_.AppendSwitch(switches::kDisableNewTabFirstRun);
   }
 
   // Run the test, by bringing up a browser and timing the new tab startup.