Examples: Removed extension checks.

examples/webgl_buffergeometry_instancing_billboards.html

@@ -84,13 +84,6 @@
 
 			renderer = new THREE.WebGLRenderer();
 
-			if ( renderer.extensions.get( 'ANGLE_instanced_arrays' ) === null ) {
-
-				document.getElementById( 'notSupported' ).style.display = '';
-				return false;
-
-			}
-
 			container = document.createElement( 'div' );
 			document.body.appendChild( container );
 

examples/webgl_depth_texture.html

@@ -74,7 +74,6 @@
 			var camera, scene, renderer, controls, stats;
 			var target;
 			var postScene, postCamera, postMaterial;
-			var supportsExtension = true;
 
 			var params = {
 				format: THREE.DepthFormat,
@@ -90,15 +89,6 @@
 			function init() {
 
 				renderer = new THREE.WebGLRenderer();
-
-				if ( ! renderer.extensions.get( 'WEBGL_depth_texture' ) ) {
-
-					supportsExtension = false;
-					document.querySelector( '#error' ).style.display = 'block';
-					return;
-
-				}
-
 				renderer.setPixelRatio( window.devicePixelRatio );
 				renderer.setSize( window.innerWidth, window.innerHeight );
 				document.body.appendChild( renderer.domElement );
@@ -219,8 +209,6 @@
 
 			function animate() {
 
-				if ( ! supportsExtension ) return;
-
 				requestAnimationFrame( animate );
 
 				// render scene into target