Clean up

The renderer makes these calls.

examples/webgl_shaders_ocean2.html

@@ -36,9 +36,6 @@
 
 					this.ms_Renderer = new THREE.WebGLRenderer();
 					this.ms_Renderer.setPixelRatio( window.devicePixelRatio );
-					this.ms_Renderer.getContext().getExtension( 'OES_texture_float' );
-					this.ms_Renderer.getContext().getExtension( 'OES_texture_float_linear' );
-
 					document.body.appendChild( this.ms_Renderer.domElement );
 
 					this.ms_Scene = new THREE.Scene();