Remove unused methods in Invidious::LogHandler (#4812)

Closes issue 4791

src/invidious/helpers/logger.cr

@@ -34,24 +34,11 @@ class Invidious::LogHandler < Kemal::BaseLogHandler
     context
   end
 
-  def puts(message : String)
-    @io << message << '\n'
-    @io.flush
-  end
-
   def write(message : String)
     @io << message
     @io.flush
   end
 
-  def set_log_level(level : String)
-    @level = LogLevel.parse(level)
-  end
-
-  def set_log_level(level : LogLevel)
-    @level = level
-  end
-
   {% for level in %w(trace debug info warn error fatal) %}
     def {{level.id}}(message : String)
       if LogLevel::{{level.id.capitalize}} >= @level