Ameba: Fix Lint/UselessAssign (#4795)

Related to issue 2231

src/invidious/yt_backend/extractors.cr

@@ -109,7 +109,6 @@ private module Parsers
       end
 
       live_now = false
-      paid = false
       premium = false
 
       premiere_timestamp = item_contents.dig?("upcomingEventData", "startTime").try { |t| Time.unix(t.as_s.to_i64) }

src/invidious/yt_backend/extractors_utils.cr

@@ -83,5 +83,5 @@ end
 
 def extract_selected_tab(tabs)
   # Extract the selected tab from the array of tabs Youtube returns
-  return selected_target = tabs.as_a.select(&.["tabRenderer"]?.try &.["selected"]?.try &.as_bool)[0]["tabRenderer"]
+  return tabs.as_a.select(&.["tabRenderer"]?.try &.["selected"]?.try &.as_bool)[0]["tabRenderer"]
 end