[rubygems/rubygems] Remove respond_to? check for Thread#name=

Since bundler now requires 3.3.1, we no longer need to do respond_to?
check before setting thread name.

https://github.com/rubygems/rubygems/commit/bfc37fc7db

lib/bundler/worker.rb

@@ -88,7 +88,7 @@ module Bundler
 
       @threads = Array.new(@size) do |i|
         Thread.start { process_queue(i) }.tap do |thread|
-          thread.name = "#{name} Worker ##{i}" if thread.respond_to?(:name=)
+          thread.name = "#{name} Worker ##{i}"
         end
       rescue ThreadError => e
         creation_errors << e