Remove Canvas2d from the playground.

Playground/debug.html

@@ -80,7 +80,6 @@
     <script src="https://preview.babylonjs.com/serializers/babylonjs.serializers.min.js"></script>
 
     <script src="https://rawgit.com/BabylonJS/Extensions/master/ClonerSystem/src/babylonx.cloner.js"></script>
-    <script src="https://rawgit.com/BabylonJS/Extensions/master/canvas2D/dist/preview%20release/babylon.canvas2d.js"></script>
     <script src="https://rawgit.com/BabylonJS/Extensions/master/CompoundShader/src/babylonx.CompoundShader.js"></script>
     <link href="css/index.css" rel="stylesheet" />
 

Playground/frame.html

@@ -69,7 +69,6 @@
     <script src="https://preview.babylonjs.com/gui/babylon.gui.min.js"></script>
 
     <script src="https://rawgit.com/BabylonJS/Extensions/master/ClonerSystem/src/babylonx.cloner.js"></script>
-    <script src="https://rawgit.com/BabylonJS/Extensions/master/canvas2D/dist/preview%20release/babylon.canvas2d.min.js"></script>
     <script src="https://rawgit.com/BabylonJS/Extensions/master/CompoundShader/src/babylonx.CompoundShader.js"></script>
     <link href="frame.css" rel="stylesheet" />
 </head>

Playground/full.html

@@ -45,7 +45,6 @@
         <script src="https://preview.babylonjs.com/gui/babylon.gui.min.js"></script>
 
         <script src="https://rawgit.com/BabylonJS/Extensions/master/ClonerSystem/src/babylonx.cloner.js"></script>
-        <script src="https://rawgit.com/BabylonJS/Extensions/master/canvas2D/dist/preview%20release/babylon.canvas2d.min.js"></script>
         <script src="https://rawgit.com/BabylonJS/Extensions/master/CompoundShader/src/babylonx.CompoundShader.js"></script>
         <link href="frame.css" rel="stylesheet" />
     </head>

Playground/index.html

@@ -60,7 +60,6 @@
         <script src="https://preview.babylonjs.com/gui/babylon.gui.min.js"></script>
 
         <script src="https://rawgit.com/BabylonJS/Extensions/master/ClonerSystem/src/babylonx.cloner.js"></script>
-        <script src="https://rawgit.com/BabylonJS/Extensions/master/canvas2D/dist/preview%20release/babylon.canvas2d.min.js"></script>
         <script src="https://rawgit.com/BabylonJS/Extensions/master/CompoundShader/src/babylonx.CompoundShader.js"></script>
         <link href="css/index.css" rel="stylesheet" />
     </head>