Hide and disable update checker on custom builds

src/qt/qt_vmmanager_main.hpp

@@ -85,7 +85,9 @@ private:
     VMManagerSystem       *selected_sysconfig;
     // VMManagerConfig       *config;
     QSortFilterProxyModel *proxy_model;
+#if EMU_BUILD_NUM != 0
     bool                   updateCheck = false;
+#endif
     bool                   regexSearch = false;
 
     // void updateSelection(const QItemSelection &selected,
@@ -97,11 +99,15 @@ private:
     void loadSettings();
     [[nodiscard]] bool currentSelectionIsValid() const;
     [[nodiscard]] QString totalCountString() const;
+#if EMU_BUILD_NUM != 0
     void backgroundUpdateCheckStart() const;
+#endif
     void showTextFileContents(const QString &title, const QString &path);
 private slots:
+#if EMU_BUILD_NUM != 0
     void backgroundUpdateCheckComplete(const UpdateCheck::UpdateResult &result);
     void backgroundUpdateCheckError(const QString &errorMsg);
+#endif
 };
 
 #include <QDialog>