diff --git wp-includes/js/quicktags.dev.js wp-includes/js/quicktags.dev.js
index 903f320..3269cfe 100644
--- wp-includes/js/quicktags.dev.js
+++ wp-includes/js/quicktags.dev.js
@@ -121,27 +121,6 @@ function edButton(id, display, tagStart, tagEnd, access, open) {
 			}
 		}
 	},
-
-	_datetime = (function() {
-		var now = new Date(), zeroise;
-
-		zeroise = function(number) {
-			var str = number.toString();
-
-			if ( str.length < 2 )
-				str = "0" + str;
-
-			return str;
-		}
-
-		return now.getUTCFullYear() + '-' +
-			zeroise( now.getUTCMonth() + 1 ) + '-' +
-			zeroise( now.getUTCDate() ) + 'T' +
-			zeroise( now.getUTCHours() ) + ':' +
-			zeroise( now.getUTCMinutes() ) + ':' +
-			zeroise( now.getUTCSeconds() ) +
-			'+00:00';
-	})(),
 	qt;
 
 	qt = QTags = function(settings) {
@@ -610,8 +589,8 @@ function edButton(id, display, tagStart, tagEnd, access, open) {
 	edButtons[20] = new qt.TagButton('em','i','<em>','</em>','i'),
 	edButtons[30] = new qt.LinkButton(), // special case
 	edButtons[40] = new qt.TagButton('block','b-quote','\n\n<blockquote>','</blockquote>\n\n','q'),
-	edButtons[50] = new qt.TagButton('del','del','<del datetime="' + _datetime + '">','</del>','d'),
-	edButtons[60] = new qt.TagButton('ins','ins','<ins datetime="' + _datetime + '">','</ins>','s'),
+	edButtons[50] = new qt.TagButton('del','del','<del>','</del>','d'),
+	edButtons[60] = new qt.TagButton('ins','ins','<ins>','</ins>','s'),
 	edButtons[70] = new qt.ImgButton(), // special case
 	edButtons[80] = new qt.TagButton('ul','ul','<ul>\n','</ul>\n\n','u'),
 	edButtons[90] = new qt.TagButton('ol','ol','<ol>\n','</ol>\n\n','o'),