@Override
	public void toolRemoved(String toolName) {
		removeDefaultAction(runToolActionMap, toolName);
		removeDefaultAction(delToolActionMap, toolName);
		removeDefaultAction(exportToolActionMap, toolName);

		// create default disable menu items if the number of tools
		// in toolchest is now zero
		if (runToolActionMap.size() == 0) {
			createPlaceHolderActions();
		}
	}
ToolConfig was removed from the project toolchest
Ghidra/Framework/Project/src/main/java/ghidra/framework/main/ToolActionManager.java