private void invokeLater(Runnable r) {
		// Since this method may be invoked from within a synchronized block it is important that 
		// the runnable be executed later in a non-blocking fashion.
		SwingUtilities.invokeLater(r);
	}
Remove the category change listener.
@param l the listener to be removed.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/data/DataTypeManagerChangeListenerHandler.java