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diff --git a/vendor/rails/activesupport/lib/active_support/core_ext/file/atomic.rb b/vendor/rails/activesupport/lib/active_support/core_ext/file/atomic.rb
deleted file mode 100644
index 8cc5654..0000000
--- a/vendor/rails/activesupport/lib/active_support/core_ext/file/atomic.rb
+++ /dev/null
@@ -1,46 +0,0 @@
-module ActiveSupport #:nodoc:
-  module CoreExtensions #:nodoc:
-    module File #:nodoc:
-      module Atomic
-        # Write to a file atomically.  Useful for situations where you don't
-        # want other processes or threads to see half-written files.
-        #
-        #   File.atomic_write("important.file") do |file|
-        #     file.write("hello")
-        #   end
-        #
-        # If your temp directory is not on the same filesystem as the file you're 
-        # trying to write, you can provide a different temporary directory.
-        # 
-        #   File.atomic_write("/data/something.important", "/data/tmp") do |f|
-        #     file.write("hello")
-        #   end
-        def atomic_write(file_name, temp_dir = Dir.tmpdir)
-          require 'tempfile' unless defined?(Tempfile)
-
-          temp_file = Tempfile.new(basename(file_name), temp_dir)
-          yield temp_file
-          temp_file.close
-
-          begin
-            # Get original file permissions
-            old_stat = stat(file_name)
-          rescue Errno::ENOENT
-            # No old permissions, write a temp file to determine the defaults
-            check_name = join(dirname(file_name), ".permissions_check.#{Thread.current.object_id}.#{Process.pid}.#{rand(1000000)}")
-            open(check_name, "w") { }
-            old_stat = stat(check_name)
-            unlink(check_name)
-          end
-
-          # Overwrite original file with temp file
-          rename(temp_file.path, file_name)
-
-          # Set correct permissions on new file
-          chown(old_stat.uid, old_stat.gid, file_name)
-          chmod(old_stat.mode, file_name)
-        end
-      end
-    end
-  end
-end