public synchronized void remove(K key) {
		Map<K, V> map = getMap();
		if (map != null) {
			map.remove(key);
		}
	}
Removes the key,value pair from the map as specified by the given key.  If the map is
currently not loaded, this method will do nothing.
@param key the key to remove from the map.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/data/LazyLoadingCachingMap.java