Port away from Quotient::Omittable

src/registration.h

@@ -12,7 +12,6 @@
 #include <QVariantMap>
 
 #include <Quotient/csapi/registration.h>
-#include <Quotient/omittable.h>
 
 #include <Quotient/jobs/basejob.h>
 #include <Quotient/util.h>
@@ -28,12 +27,12 @@ class NeoChatRegisterJob : public Quotient::BaseJob
 {
 public:
     explicit NeoChatRegisterJob(const QString &kind = QStringLiteral("user"),
-                                const Quotient::Omittable<QJsonObject> &auth = {},
+                                const std::optional<QJsonObject> &auth = {},
                                 const QString &username = {},
                                 const QString &password = {},
                                 const QString &deviceId = {},
                                 const QString &initialDeviceDisplayName = {},
-                                Quotient::Omittable<bool> inhibitLogin = {});
+                                std::optional<bool> inhibitLogin = {});
 
     QString userId() const
     {