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

This reverts commit b4f750e7db40352111417ea89a9f375ae8c746ab, reversing
changes made to b19e3156154ba0dd232a3d165b1759c57e2858f2.

launcher/minecraft/auth/steps/OfflineStep.cpp

@@ -1,18 +0,0 @@
-#include "OfflineStep.h"
-
-#include "Application.h"
-
-OfflineStep::OfflineStep(AccountData* data) : AuthStep(data) {}
-OfflineStep::~OfflineStep() noexcept = default;
-
-QString OfflineStep::describe() {
-    return tr("Creating offline account.");
-}
-
-void OfflineStep::rehydrate() {
-    // NOOP
-}
-
-void OfflineStep::perform() {
-    emit finished(AccountTaskState::STATE_WORKING, tr("Created offline account."));
-}