fixed substatus on ftb_import

Signed-off-by: Trial97 <alexandru.tripon97@gmail.com>

launcher/modplatform/legacy_ftb/PackInstallTask.h

@@ -34,10 +34,6 @@ class PackInstallTask : public InstanceTask {
     void install();
 
    private slots:
-    void onDownloadSucceeded();
-    void onDownloadFailed(QString reason);
-    void onDownloadProgress(qint64 current, qint64 total);
-    void onDownloadAborted();
 
     void onUnzipFinished();
     void onUnzipCanceled();