Remove old debug code from ntp.

chrome/browser/resources/new_new_tab.css

 html {
   /* This is needed because of chrome://theme/css/new_tab.css */
   height: 100%;
 }
 
 body {
   margin: 0;
   height: 100%;
   overflow: auto;
   -webkit-user-select: none;
@@ skipping 258 matching lines @@
   padding: 0;
   margin: 0;
   -webkit-appearance: none;
   border: 0;
   background: none;
   cursor: pointer;
   text-decoration: underline;
   font-family: inherit;
 }
 
-#apps-launch-control {
-  margin-top: 10px;
-}
-
-#apps-launch-control input {
-  position: relative;
-  top: 1px;
-  margin-right: 0.2em;
-  margin-left: 1em;
-}
-
-#debug > h2 {
-  color: red;
-}
-
-#debug > div {
-  margin: 0;
-}
-
 .section {
   position: fixed;
   font-size: 12px;
 }
 
 .section.disabled {
   display: none !important;
 }
 
 .section > h2 {
@@ skipping 127 matching lines @@
   }
 }
 
 /* Ensure we have at least 10px horizontal marging. */
 @media (max-width: 712px) {
   #main {
     margin-left: 10px;
     margin-right: 10px;
   }
 }