shifted isUsernameEditingAllowed to qml from c++

src/ui/UserProfile.cpp

@@ -270,8 +270,6 @@ UserProfile::changeUsername(QString username)
                                                       err->matrix_error.error);
                   });
         }
-
-        allowUsernameEditing(false);
 }
 
 void
@@ -290,19 +288,6 @@ UserProfile::unverify(QString device)
         cache::markDeviceUnverified(userid_.toStdString(), device.toStdString());
 }
 
-void
-UserProfile::allowUsernameEditing(bool allow)
-{
-        usernameEditing = allow;
-        emit usernameEditingChanged();
-}
-
-bool
-UserProfile::isUsernameEditingAllowed() const
-{
-        return usernameEditing;
-}
-
 void
 UserProfile::setGlobalUsername(const QString &globalUser)
 {