Remove supervised user import command line flags.

chrome/common/chrome_switches.h

Index: chrome/common/chrome_switches.h
diff --git a/chrome/common/chrome_switches.h b/chrome/common/chrome_switches.h
index f4518f7df39d24f2c8cb2b9c7da471660d756b27..9e3e6793a608ae3927d9a7fef6353a5979640ccf 100644
--- a/chrome/common/chrome_switches.h
+++ b/chrome/common/chrome_switches.h
@@ -26,7 +26,6 @@ namespace switches {
 
 // All switches in alphabetical order. The switches should be documented
 // alongside the definition of their values in the .cc file.
-extern const char kAllowCreateExistingManagedUsers[];
 extern const char kAllowCrossOriginAuthPrompt[];
 extern const char kAllowFileAccess[];
 extern const char kAllowHttpScreenCapture[];
@@ -84,7 +83,6 @@ extern const char kDisableClientSidePhishingDetection[];
 extern const char kDisableComponentExtensionsWithBackgroundPages[];
 extern const char kDisableComponentUpdate[];
 extern const char kDisableCRLSets[];
-extern const char kDisableCreateExistingManagedUsers[];
 extern const char kDisableDefaultApps[];
 extern const char kDisableDeviceDiscovery[];
 extern const char kDisableDeviceDiscoveryNotifications[];