@Override
	public void toolRemoved(String toolName) {
		if (!toolButtonMap.containsKey(toolName)) {
			return;
		}
		ToolButton button = toolButtonMap.get(toolName);
		this.remove(button);
		toolButtonMap.remove(toolName);
		button.dispose();

		tool.getToolFrame().validate();

		repaint();
	}
ToolSet was added to the project toolchest
Ghidra/Framework/Project/src/main/java/ghidra/framework/main/ProjectToolBar.java