Remove extraneous line.

Author: Arthur Evans

core-icon.html

@@ -28,8 +28,6 @@
 The core elements include several sets of icons. 
 To use the default set of icons, import  `core-icons.html` and use the `icon` attribute to specify an icon:
 
-Example of using an icon from the default iconset:
-    
     <!-- import default iconset and core-icon -->
     <link rel="import" href="/components/core-icons/core-icons.html">
 
@@ -45,7 +43,6 @@
     
 You can also create custom icon sets of bitmap or SVG icons. 
 
-
 Example of using an icon named `cherry` from a custom iconset with the ID `fruit`:
 
     <core-icon icon="fruit:cherry"></core-icon>