diff --git a/railties/lib/rails/rubyprof_ext.rb b/railties/lib/rails/rubyprof_ext.rb
deleted file mode 100644
index 017eba3a76..0000000000
--- a/railties/lib/rails/rubyprof_ext.rb
+++ /dev/null
@@ -1,35 +0,0 @@
-require 'prof'
-
-module Prof #:nodoc:
-  # Adapted from Shugo Maeda's unprof.rb
-  def self.print_profile(results, io = $stderr)
-    total = results.detect { |i|
-      i.method_class.nil? && i.method_id == :"#toplevel"
-    }.total_time
-    total = 0.001 if total < 0.001
-
-    io.puts "  %%   cumulative   self              self     total"
-    io.puts " time   seconds   seconds    calls  ms/call  ms/call  name"
-
-    sum = 0.0
-    results.each do |r|
-      sum += r.self_time
-
-      name =  if r.method_class.nil?
-                r.method_id.to_s
-              elsif r.method_class.is_a?(Class)
-                "#{r.method_class}##{r.method_id}"
-              else
-                "#{r.method_class}.#{r.method_id}"
-              end
-      io.printf "%6.2f %8.3f  %8.3f %8d %8.2f %8.2f  %s\n",
-        r.self_time / total * 100,
-        sum,
-        r.self_time,
-        r.count,
-        r.self_time * 1000 / r.count,
-        r.total_time * 1000 / r.count,
-        name
-    end
-  end
-end