Revert "Merge pull request #50 from bexnoss/offline-mode"

This reverts commit b4f750e7db40352111417ea89a9f375ae8c746ab, reversing
changes made to b19e3156154ba0dd232a3d165b1759c57e2858f2.

launcher/minecraft/auth/steps/OfflineStep.h

@@ -1,20 +0,0 @@
-
-#pragma once
-#include <QObject>
-
-#include "QObjectPtr.h"
-#include "minecraft/auth/AuthStep.h"
-
-#include <katabasis/DeviceFlow.h>
-
-class OfflineStep : public AuthStep {
-    Q_OBJECT
-public:
-    explicit OfflineStep(AccountData *data);
-    virtual ~OfflineStep() noexcept;
-
-    void perform() override;
-    void rehydrate() override;
-
-    QString describe() override;
-};