Remove references to IsNewAvatarMenu since the flag was removed.

chrome/browser/ui/browser_command_controller_browsertest.cc

Index: chrome/browser/ui/browser_command_controller_browsertest.cc
diff --git a/chrome/browser/ui/browser_command_controller_browsertest.cc b/chrome/browser/ui/browser_command_controller_browsertest.cc
index feb5af256f712b8a1d9f5b6528dd06f3aa55cc81..5a03f0a529cb6fc2db819084c81f4a4ec0aca984 100644
--- a/chrome/browser/ui/browser_command_controller_browsertest.cc
+++ b/chrome/browser/ui/browser_command_controller_browsertest.cc
@@ -78,9 +78,6 @@ IN_PROC_BROWSER_TEST_F(BrowserCommandControllerBrowserTest, DisableFind) {
 // Flakes http://crbug.com/471953
 IN_PROC_BROWSER_TEST_F(BrowserCommandControllerBrowserTest,
                        DISABLED_NewAvatarMenuEnabledInGuestMode) {
-  switches::EnableNewAvatarMenuForTesting(
-      base::CommandLine::ForCurrentProcess());
-
   EXPECT_EQ(1U, BrowserList::GetInstance(chrome::GetActiveDesktop())->size());
 
   // Create a guest browser nicely. Using CreateProfile() and CreateBrowser()