Update normalize.css from master branch

Author: necolas

normalize.css

@@ -1,4 +1,4 @@
-/*! normalize.css 2012-03-09T22:11 UTC - http://github.com/necolas/normalize.css */
+/*! normalize.css 2012-03-11T12:53 UTC - http://github.com/necolas/normalize.css */
 
 /* =============================================================================
    HTML5 display definitions
@@ -489,22 +489,6 @@ textarea {
     vertical-align: top; /* 2 */
 }
 
-/*
- * Addresses placeholder color unset in Firefox
- */
-
-:-moz-placeholder {
-    color: #a9a9a9;
-}
-
-/*
- * Addresses placeholder text remaining visible on focus in Chrome
- */
-
-:focus::-webkit-input-placeholder {
-    color: transparent;
-}
-
 
 /* =============================================================================
    Tables