void folderRemoved(String folderName) {
		synchronized (fileSystem) {
			GhidraFolderData folderData = folderDataCache.remove(folderName);
			if (folderData != null) {
				folderData.dispose();
			}
			if (visited && folderList.remove(folderName)) {
				listener.domainFolderRemoved(getDomainFolder(), folderName);
			}
		}
	}
Remove and dispose specified subfolder data and notify listener of removal
if this folder has been visited
@param folderName name of folder which was removed
Ghidra/Framework/Project/src/main/java/ghidra/framework/data/GhidraFolderData.java