Remove irrelevant step from CodeTour

samples/react-adaptivecards/.tours/code-walkthrough.tour

@@ -352,21 +352,6 @@
       "line": 14,
       "description": "We also use `markdown-it` to parse the Markdown from the rendered HTML so that we fully support the Adaptive Card schema."
     },
-    {
-      "file": "src/controls/AdaptiveCard/AdaptiveCard.tsx",
-      "line": 84,
-      "description": "We have to do a little workaround here, but that's a temporary issue.\r\n\r\nThe May 2020 Adaptive Card templating library change the syntax from `{}` to `${}`, but the npm package doesn't seem to be updated yet. So we just replace all `${}` to `{}` so that you can use all the latest Adaptive Card templating samples without issues. \r\n\r\nWe'll fix this when the npm package is updated.",
-      "selection": {
-        "start": {
-          "line": 79,
-          "character": 8
-        },
-        "end": {
-          "line": 84,
-          "character": 61
-        }
-      }
-    },
     {
       "file": "src/controls/AdaptiveCard/AdaptiveCard.tsx",
       "line": 132,
@@ -393,4 +378,4 @@
       "description": "This is pretty much a brute force method where we change the Adaptive Card's host configuration with the theme's colors. \r\n\r\nWe used trial and error to find what theme slots match which host configuration styles. \r\n\r\nWould love to get your feedback!"
     }
   ]
-}
+}