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diff --git a/vendor/rails/activesupport/lib/active_support/core_ext/hash/slice.rb b/vendor/rails/activesupport/lib/active_support/core_ext/hash/slice.rb
deleted file mode 100644
index d845a6d..0000000
--- a/vendor/rails/activesupport/lib/active_support/core_ext/hash/slice.rb
+++ /dev/null
@@ -1,40 +0,0 @@
-module ActiveSupport #:nodoc:
-  module CoreExtensions #:nodoc:
-    module Hash #:nodoc:
-      # Slice a hash to include only the given keys. This is useful for
-      # limiting an options hash to valid keys before passing to a method:
-      #
-      #   def search(criteria = {})
-      #     assert_valid_keys(:mass, :velocity, :time)
-      #   end
-      #
-      #   search(options.slice(:mass, :velocity, :time))
-      #
-      # If you have an array of keys you want to limit to, you should splat them:
-      #
-      #   valid_keys = [:mass, :velocity, :time]
-      #   search(options.slice(*valid_keys))
-      module Slice
-        # Returns a new hash with only the given keys.
-        def slice(*keys)
-          keys = keys.map! { |key| convert_key(key) } if respond_to?(:convert_key)
-          hash = self.class.new
-          keys.each { |k| hash[k] = self[k] if has_key?(k) }
-          hash
-        end
-
-        # Replaces the hash with only the given keys.
-        # Returns a hash contained the removed key/value pairs
-        #   {:a => 1, :b => 2, :c => 3, :d => 4}.slice!(:a, :b) # => {:c => 3, :d =>4}
-        def slice!(*keys)
-          keys = keys.map! { |key| convert_key(key) } if respond_to?(:convert_key)
-          omit = slice(*self.keys - keys)
-          hash = slice(*keys)
-          replace(hash)
-          omit
-        end
-      end
-    end
-  end
-end
-