Simplify element removal to save a few bytes

It's also a minor peephole optimization, but I saw bigger size wins, so
I'm citing that.

docs/change-log.md

@@ -29,6 +29,7 @@
 - stream: when a stream conditionally returns HALT, dependant stream will also end ([#2200](https://github.com/MithrilJS/mithril.js/pull/2200))
 - render: remove some redundancy within the component initialization code ([#2213](https://github.com/MithrilJS/mithril.js/pull/2213))
 - render: Align custom elements to work like normal elements, minus all the HTML-specific magic. ([#2221](https://github.com/MithrilJS/mithril.js/pull/2221))
+- render: simplify component removal ([#2214](https://github.com/MithrilJS/mithril.js/pull/2214))
 
 #### News
 

render/render.js

@@ -643,22 +643,14 @@ module.exports = function($window) {
 				checkState(vnode, original)
 				onremove(vnode)
 				if (vnode.dom) {
+					var parent = vnode.dom.parentNode
 					var count = vnode.domSize || 1
-					if (count > 1) {
-						var dom = vnode.dom
-						while (--count) {
-							removeNodeFromDOM(dom.nextSibling)
-						}
-					}
-					removeNodeFromDOM(vnode.dom)
+					while (--count) parent.removeChild(vnode.dom.nextSibling)
+					parent.removeChild(vnode.dom)
 				}
 			}
 		}
 	}
-	function removeNodeFromDOM(node) {
-		var parent = node.parentNode
-		if (parent != null) parent.removeChild(node)
-	}
 	function onremove(vnode) {
 		if (vnode.attrs && typeof vnode.attrs.onremove === "function") callHook.call(vnode.attrs.onremove, vnode)
 		if (typeof vnode.tag !== "string") {