private void RemoveSubmoduleButtons()
{
_submodulesStatusImagesCTS.Cancel();
foreach (var item in toolStripButtonLevelUp.DropDownItems)
{
var toolStripButton = item as ToolStripMenuItem;
if (toolStripButton != null)
toolStripButton.Click -= SubmoduleToolStripButtonClick;
}
toolStripButtonLevelUp.DropDownItems.Clear();
}