Removing extra refresh that is no longer needed because of CM fix.

IPython/frontend/html/notebook/static/js/codecell.js

@@ -530,11 +530,11 b' var IPython = (function (IPython) {'
 
     CodeCell.prototype.select = function () {
         IPython.Cell.prototype.select.apply(this);
-        // In some cases (inserting a new cell) we need a refresh before and
-        // after the focus. Not sure why this is the case.
         this.code_mirror.refresh();
         this.code_mirror.focus();
-        this.code_mirror.refresh();
+        // We used to need an additional refresh() after the focus, but
+        // it appears that this has been fixed in CM. This bug would show
+        // up on FF when a newly loaded markdown cell was edited.
     };
 
 

IPython/frontend/html/notebook/static/js/textcell.js

@@ -96,14 +96,11 b' var IPython = (function (IPython) {'
             var output = text_cell.find("div.text_cell_render");  
             output.hide();
             text_cell.find('div.text_cell_input').show();
-            // I don't know why I need to do this, but if I don't do
-            // refresh/focus/refresh, the to_markdown method won't work.
             this.code_mirror.refresh();
             this.code_mirror.focus();
-            // This final refresh is needed on Firefox to trigger the editor
-            // to be auto-sized. This glitch only happens on cell that are
-            // loaded initially and haven't had their editor focused before.
-            this.code_mirror.refresh();
+            // We used to need an additional refresh() after the focus, but
+            // it appears that this has been fixed in CM. This bug would show
+            // up on FF when a newly loaded markdown cell was edited.
             this.rendered = false;
             if (this.get_text() === this.placeholder) {
                 this.set_text('');