Remove like/dislike from LinkInfo YouTube integration

YouTube is removing dislike counts from API responses on December 13th, 2021.

src/csbot/plugins/youtube.py

@@ -56,7 +56,7 @@ class Youtube(Plugin):
         'api_key': ['YOUTUBE_DATA_API_KEY'],
     }
 
-    RESPONSE = '"{title}" [{duration}] (by {uploader} at {uploaded}) | Views: {views} [{likes}]'
+    RESPONSE = '"{title}" [{duration}] (by {uploader} at {uploaded}) | Views: {views}'
     CMD_RESPONSE = RESPONSE + ' | {link}'
 
     async def get_video_json(self, id):
@@ -130,13 +130,6 @@ async def _yt(self, url):
         except KeyError:
             vid_info["views"] = "N/A"
 
-        try:
-            likes = int(json["statistics"]["likeCount"])
-            dislikes = int(json["statistics"]["dislikeCount"])
-            vid_info["likes"] = "+{:,}/-{:,}".format(likes, dislikes)
-        except KeyError:
-            vid_info["likes"] = "N/A"
-
         return vid_info
 
     @Plugin.integrate_with('linkinfo')