Folder: remove unused variable

src/gui/folder.cpp

@@ -53,7 +53,6 @@ Folder::Folder(const FolderDefinition& definition,
       , _accountState(accountState)
       , _definition(definition)
       , _csyncUnavail(false)
-      , _wipeDb(false)
       , _proxyDirty(true)
       , _lastSyncDuration(0)
       , _consecutiveFailingSyncs(0)

src/gui/folder.h

@@ -324,7 +324,6 @@ private:
     SyncResult _syncResult;
     QScopedPointer<SyncEngine> _engine;
     bool         _csyncUnavail;
-    bool         _wipeDb;
     bool         _proxyDirty;
     QPointer<RequestEtagJob> _requestEtagJob;
     QString       _lastEtag;