Remove temporary try-ahem tests

LayoutTests/resources/ahem.js

 // This file is included by tests using Ahem font to ensure that the font is
 // loaded before window.onload fires and the test finishes.
 // Note: this doesn't work if the test doesn't contain any visible element with
 // 'font-family: Ahem' style.
 (function() {
   var scripts = document.getElementsByTagName('script');
   var scriptSrc = scripts[scripts.length - 1].src;
   var relativePath = scriptSrc.substr(0, scriptSrc.lastIndexOf('/'));
 
   window.addEventListener('DOMContentLoaded', function() {
     var style = document.createElement('style');
     style.appendChild(document.createTextNode(
-      '@font-face { font-family: myahem; src: url(' + relativePath + '/Ahem.ttf'));
+      '@font-face { font-family: Ahem; src: url(' + relativePath + '/Ahem.ttf); }'));
     document.head.appendChild(style);
     // Force a layout to start loading the font.
     document.documentElement.offsetTop;
   }, true);
 }());