message: remove not needed code to increase speed
diff: @@ -48,10 +48,11 @@ bool TreeProxy::filterAcceptsRow(int source_row, const QModelIndex &source_paren
  if (!index.isValid())
  return false;
  - QString status = sourceModel()->data(index, DiffTreeModel::StatusRole).toString();
  - QRegExp regexp(".*[AM?].*");
  - if (!status.contains(regexp))
  - return false; // if the file/folder was not modified/added ... don't show it in the tree view
  + // This is anymore needed, because only the diff tree is checked and so every file is modified or was added
  +// QString status = sourceModel()->data(index, DiffTreeModel::StatusRole).toString();
  +// QRegExp regexp(".*[AM?].*");
  +// if (!status.contains(regexp))
  +// return false; // if the file/folder was not modified/added ... don't show it in the tree view
  Qt::CheckState state = static_cast<Qt::CheckState>(sourceModel()->data(index, Qt::CheckStateRole).toInt());
  if (mStaged && state == Qt::CheckState::Unchecked)
  