search functions: Don't return result count

This is useless, as the items count can be directly acessed
using the '.size' method, so use that instead when needed.

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

@@ -254,7 +254,7 @@ module Invidious::Routes::API::V1::Channels
     page = env.params.query["page"]?.try &.to_i?
     page ||= 1
 
-    count, search_results = channel_search(query, page, ucid)
+    search_results = channel_search(query, page, ucid)
     JSON.build do |json|
       json.array do
         search_results.each do |item|