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diff --git a/vendor/rails/activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb b/vendor/rails/activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb
deleted file mode 100644
index 00c7109..0000000
--- a/vendor/rails/activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb
+++ /dev/null
@@ -1,94 +0,0 @@
-module ActiveRecord
-  module ConnectionAdapters # :nodoc:
-    module QueryCache
-      class << self
-        def included(base)
-          base.class_eval do
-            alias_method_chain :columns, :query_cache
-            alias_method_chain :select_all, :query_cache
-          end
-
-          dirties_query_cache base, :insert, :update, :delete
-        end
-
-        def dirties_query_cache(base, *method_names)
-          method_names.each do |method_name|
-            base.class_eval <<-end_code, __FILE__, __LINE__
-              def #{method_name}_with_query_dirty(*args)        # def update_with_query_dirty(*args)
-                clear_query_cache if @query_cache_enabled       #   clear_query_cache if @query_cache_enabled
-                #{method_name}_without_query_dirty(*args)       #   update_without_query_dirty(*args)
-              end                                               # end
-                                                                #
-              alias_method_chain :#{method_name}, :query_dirty  # alias_method_chain :update, :query_dirty
-            end_code
-          end
-        end
-      end
-
-      attr_reader :query_cache, :query_cache_enabled
-
-      # Enable the query cache within the block.
-      def cache
-        old, @query_cache_enabled = @query_cache_enabled, true
-        @query_cache ||= {}
-        yield
-      ensure
-        clear_query_cache
-        @query_cache_enabled = old
-      end
-
-      # Disable the query cache within the block.
-      def uncached
-        old, @query_cache_enabled = @query_cache_enabled, false
-        yield
-      ensure
-        @query_cache_enabled = old
-      end
-
-      # Clears the query cache.
-      #
-      # One reason you may wish to call this method explicitly is between queries
-      # that ask the database to randomize results. Otherwise the cache would see
-      # the same SQL query and repeatedly return the same result each time, silently
-      # undermining the randomness you were expecting.
-      def clear_query_cache
-        @query_cache.clear if @query_cache
-      end
-
-      def select_all_with_query_cache(*args)
-        if @query_cache_enabled
-          cache_sql(args.first) { select_all_without_query_cache(*args) }
-        else
-          select_all_without_query_cache(*args)
-        end
-      end
-
-      def columns_with_query_cache(*args)
-        if @query_cache_enabled
-          @query_cache["SHOW FIELDS FROM #{args.first}"] ||= columns_without_query_cache(*args)
-        else
-          columns_without_query_cache(*args)
-        end
-      end
-
-      private
-        def cache_sql(sql)
-          result =
-            if @query_cache.has_key?(sql)
-              log_info(sql, "CACHE", 0.0)
-              @query_cache[sql]
-            else
-              @query_cache[sql] = yield
-            end
-
-          if Array === result
-            result.collect { |row| row.dup }
-          else
-            result.duplicable? ? result.dup : result
-          end
-        rescue TypeError
-          result
-        end
-    end
-  end
-end