Disable testSignInOpenSettings and testSignInAndTapSettingsLink on iOS.

ios/chrome/browser/ui/first_run/first_run_egtest.mm

Index: ios/chrome/browser/ui/first_run/first_run_egtest.mm
diff --git a/ios/chrome/browser/ui/first_run/first_run_egtest.mm b/ios/chrome/browser/ui/first_run/first_run_egtest.mm
index cf6e70f7b42ed4c59105a9765c60ef46f13f5598..406fcdce0b7487f8d8d8e63968b9f2fcf2eb6f5a 100644
--- a/ios/chrome/browser/ui/first_run/first_run_egtest.mm
+++ b/ios/chrome/browser/ui/first_run/first_run_egtest.mm
@@ -216,7 +216,8 @@ - (void)testSignInAndUndo {
 }
 
 // Signs in to an account and then taps the Advanced link to go to settings.
-- (void)testSignInAndTapSettingsLink {
+// TODO(crbug.com/718023): Re-enable test.
+- (void)testSignInAndTapSettingsLink_DISABLED {
   ChromeIdentity* identity = GetFakeIdentity();
   ios::FakeChromeIdentityService::GetInstanceFromChromeProvider()->AddIdentity(
       identity);