Remove update API - #254

c3.js

@@ -4493,27 +4493,6 @@
             redraw({withUpdateXDomain: true});
         };
 
-        // For passing the configuration you want to update.
-        c3.update = function (keys, value) {
-            var target = config, i, isLast, nextTarget;
-
-            for (i = 0; i < keys.length; i++) {
-                isLast = (i === keys.length - 1);
-                nextTarget = target[keys[i]];
-                if (isLast) {
-                    if (target[keys[i]] === undefined) {
-                        target[keys[i]] = '';
-                    }
-                    target[keys[i]] = value;
-                } else {
-                    target = nextTarget;
-                }
-            }
-
-            // Don't have a way to set the __variables without regenerating.
-            return parent.c3.generate(config);
-        };
-
         c3.load = function (args) {
             // update xs if specified
             if (args.xs) {