Fix "Remove Guest" option shows "Reset Guest" dialog

If the guest user was not auto created, removing the user from settings message was wrongly worded. Small refactor to reuse the same wording in different modules has been done.

Bug: 225314166
Test: manual
Change-Id: Ia1871efc6aeeb2d3604c2fc4fd98a2a3a500953b

src/com/android/settings/users/UserSettings.java

@@ -737,8 +737,13 @@ public class UserSettings extends SettingsPreferenceFragment
                 return buildAddUserDialog(USER_TYPE_RESTRICTED_PROFILE);
             }
             case DIALOG_CONFIRM_RESET_GUEST: {
-                return UserDialogs.createResetGuestDialog(getActivity(),
+                if (mGuestUserAutoCreated) {
+                    return UserDialogs.createResetGuestDialog(getActivity(),
                         (dialog, which) -> resetGuest());
+                } else {
+                    return UserDialogs.createRemoveGuestDialog(getActivity(),
+                        (dialog, which) -> resetGuest());
+                }
             }
             default:
                 return null;