@Override
	protected void categoryRemoved(Category parent, String name, long categoryID) {
		super.categoryRemoved(parent, name, categoryID);
		program.categoryChanged(categoryID, ProgramEvent.DATA_TYPE_CATEGORY_REMOVED, parent, name);
	}
Update program-architecture information following a language upgrade/change
@param monitor task monitor
@throws IOException if IO error occurs
@throws CancelledException if task monitor cancelled
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/data/ProgramDataTypeManager.java