[css-easing-2][editorial] Remove manual biblio, as I'm adding it to SpecRef.

Author: tabatkins

css-easing-2/Overview.bs

@@ -33,31 +33,16 @@ WPT Display: closed
 !Tests: <a href="https://github.com/web-platform-tests/wpt/tree/master/css/css-easing">web-platform-tests css/css-easing</a>
 </pre>
 
-<pre class=biblio>
-{
-  "FUND-COMP-GRAPHICS": {
-    "title": "Fundamentals of Computer Graphics",
-    "authors": [
-      "Peter Shirley",
-      "Michael Ashikhmin",
-      "Steve Marschner"
-    ],
-    "date": "2009",
-    "publisher": "A K Peters Limited"
-  }
-}
-</pre>
-
 <style>
+.easing-graph {
+  max-width: 400px;
+  width: 100%;
+}
+@media (prefers-color-scheme: dark) {
   .easing-graph {
-    max-width: 400px;
-    width: 100%;
-  }
-  @media (prefers-color-scheme: dark) {
-    .easing-graph {
-      background: none;
-    }
+    background: none;
   }
+}
 </style>
 
 Introduction {#introduction}