remove unused variable

simplify resolve url

remove trailing spaces

Co-Authored-By: Samantaz Fox <coding@samantaz.fr>

src/invidious/routes/api/v1/channels.cr

@@ -373,7 +373,6 @@ module Invidious::Routes::API::V1::Channels
 
   def self.post_comments(env)
     locale = env.get("preferences").as(Preferences).locale
-    region = env.params.query["region"]?
 
     env.response.content_type = "application/json"
 

src/invidious/routes/api/v1/misc.cr

@@ -173,8 +173,8 @@ module Invidious::Routes::API::V1::Misc
     end
     JSON.build do |json|
       json.object do
-        json.field "ucid", sub_endpoint["browseId"].try &.as_s if sub_endpoint["browseId"]?
-        json.field "videoId", sub_endpoint["videoId"].try &.as_s if sub_endpoint["videoId"]?
+        json.field "ucid", sub_endpoint["browseId"].as_s if sub_endpoint["browseId"]?
+        json.field "videoId", sub_endpoint["videoId"].as_s if sub_endpoint["videoId"]?
         json.field "params", params.try &.as_s
         json.field "pageType", pageType
       end