Update WebGLRenderer.html

Remove clearColor/clearAlpha from constructor parameters

docs/api/renderers/WebGLRenderer.html

@@ -28,8 +28,6 @@
 		antialias — [page:Boolean], default is *false*.<br />
 		stencil — [page:Boolean], default is *true*.<br />
 		preserveDrawingBuffer — [page:Boolean], default is *false*.<br />
-		clearColor — [page:Integer], default is *0x000000*.<br />
-		clearAlpha — [page:Float], default is *0*.<br />
 		maxLights — [page:Integer], default is *4*.<br />
 		</div>