Removed unnecessary description of the test code. And, correct errors detected in WebStorm.

threejs/tests/webgl/webgl_custom_attributes.ts

@@ -35,7 +35,7 @@
 
             amplitude: { type: "f", value: 1.0 },
             color: { type: "c", value: new THREE.Color(0xff2200) },
-            texture: { type: "t", value: THREE.ImageUtils.loadTexture("textures/water.jpg") },
+            texture: { type: "t", value: THREE.ImageUtils.loadTexture("textures/water.jpg") }
 
         };
 

threejs/tests/webgl/webgl_sprites.ts

@@ -5,7 +5,7 @@
 
 () => {
     // ------- variable definitions that does not exist in the original code. These are for typescript.
-    var material: any;
+    var material: THREE.SpriteMaterial;
     // -------
 
     var camera, scene, renderer;