chore(pages.json): 移除 createCanvasContextAsync 示例

pages.json

@@ -1130,13 +1130,6 @@
 			}
 		},
 		// #endif
-		{
-			"path": "pages/API/create-canvas-context-async/create-canvas-context-async",
-			"group": "1,8,1",
-			"style": {
-				"navigationBarTitleText": "createCanvasContextAsync | createCanvasContextAsync"
-			}
-		},
 		{
 			"path": "pages/API/resize-observer/resize-observer",
 			"group": "1,30",
@@ -2322,17 +2315,7 @@
 						}
 					]
 				},
-				{
-					"id": "api.canvas",
-					"name": "canvas",
-					"children": [
 				null,
-						{
-							"id": "api.canvas.createCanvasContextAsync",
-							"name": "createCanvasContextAsync"
-						}
-					]
-				},
 				{
 					"id": "api.location",
 					"name": "位置",