Removed blame comment

IPython/html/static/base/less/flexbox.less

@@ -102,8 +102,6 b''
     box-pack: center;
 }
 
-/* Code below was added on 11/6/2013 by Jonathan Frederic */
-
 .align-start {
 	-webkit-box-align: start;
 	-moz-box-align: start;