Removed confusing part

Dynamic addition of light in run-time does seems to be possible

docs/manual/en/introduction/How-to-update-things.html

@@ -181,7 +181,6 @@ geometry.tangentsNeedUpdate = true;
 			<p>The following properties can't be easily changed at runtime (once the material is rendered at least once):</p>
 			<ul>
 				<li>numbers and types of uniforms</li>
-				<li>numbers and types of lights</li>
 				<li>presence or not of
 					<ul>
 						<li>texture</li>