Merge pull request #17021 from Mugen87/dev34

Docs: Clean up.

Author: Mugen87

docs/api/en/renderers/WebGLRenderer.html

@@ -143,16 +143,6 @@ <h3>[property:Array clippingPlanes]</h3>
 		 Default is [].
 		</p>
 
-		<h3>[property:WebGLRenderingContext context]</h3>
-		<p>
-		The renderer obtains a [link:https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext RenderingContext] context
-		  from its [page:WebGLRenderer.domElement domElement] by default, using
-			[link:https://developer.mozilla.org/en-US/docs/Web/API/HTMLCanvasElement/getContext HTMLCanvasElement.getContext]().<br /><br />
-
-		You can create this manually, however it must correspond to the
-		[page:WebGLRenderer.domElement domElement] in order to render to the screen.
-		</p>
-
 		<h3>[property:DOMElement domElement]</h3>
 		<p>
 		A [link:https://developer.mozilla.org/en-US/docs/Web/HTML/Element/canvas canvas] where the renderer draws its output.<br />

docs/api/zh/renderers/WebGLRenderer.html

@@ -119,15 +119,6 @@ <h3>[property:Array clippingPlanes]</h3>
             默认值是[]
 		</p>
 
-		<h3>[property:WebGLRenderingContext context]</h3>
-		<p>
-            渲染器默认使用[link:https://developer.mozilla.org/en-US/docs/Web/API/HTMLCanvasElement/getContext HTMLCanvasElement.getContext]()从其
-            [page:WebGLRenderer.domElement domElement]获取渲染环境([link:https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext RenderingContext]）<br /><br />
-
-		    你可以手动创建创建它，但它必须与[page:WebGLRenderer.domElement domElement]对应，才能呈现到屏幕上。
-
-		</p>
-
 		<h3>[property:DOMElement domElement]</h3>
 		<p>
 		一个[link:https://developer.mozilla.org/en-US/docs/Web/HTML/Element/canvas canvas]，渲染器在其上绘制输出。<br />