Eliminate method redefinition warning

In case method is redefined we should use undef_method to avoid warnings.

Author: Peter Rezikov

lib/rails_semantic_logger/extensions/active_job/logging.rb

@@ -7,6 +7,7 @@ module Logging
 
     private
 
+    undef_method :tag_logger
     def tag_logger(*tags, &block)
       logger.tagged(*tags, &block)
     end

lib/rails_semantic_logger/extensions/rails/server.rb

@@ -4,7 +4,8 @@
 module Rails
   class Server
     private
-
+    
+    undef_method :log_to_stdout
     def log_to_stdout
       wrapped_app # touch the app so the logger is set up