Remove functions finally not needed in Table module

js/Table.js

@@ -4,7 +4,6 @@ import {compare, of, proj} from UnitJS.Fun;
 function Table(itemMaker, sortCriterion) {
 	var items = {};
 	return {
-		dump: dump,
 		get: get,
 		getAll: getAll,
 		insert: insert,
@@ -12,10 +11,6 @@ function Table(itemMaker, sortCriterion) {
 		remove: remove
 	};
 
-	function dump() {
-		return items;
-	}
-
 	function get(key) {
 		return items[key];
 	}
@@ -37,24 +32,9 @@ function Table(itemMaker, sortCriterion) {
 		}
 	}
 
-	function update(mapper) {
-		for(var key in items) {
-			var newValue = mapper(items[key]);
-			if(newValue != undefined) {
-				insert(key, newValue);
-			} else {
-				remove(key);
-			}
-		}
-	}
-
 	function remove(key) {
 		delete items[key];
 	}
-
-	function restore(dumped) {
-		items = dumped;
-	}
 }
 
 return {