Remove barback from the repo.

pkg/barback/example/aggregate_transformer/lib/recipes-grammas/banana-pudding-recipe.html

Index: pkg/barback/example/aggregate_transformer/lib/recipes-grammas/banana-pudding-recipe.html
diff --git a/pkg/barback/example/aggregate_transformer/lib/recipes-grammas/banana-pudding-recipe.html b/pkg/barback/example/aggregate_transformer/lib/recipes-grammas/banana-pudding-recipe.html
deleted file mode 100644
index f3e3b63986b3b48bbb592bbdfdd475b55b186f30..0000000000000000000000000000000000000000
--- a/pkg/barback/example/aggregate_transformer/lib/recipes-grammas/banana-pudding-recipe.html
+++ /dev/null
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-
-<h2><a name="banana-pudding">Banana Pudding</a></h2>
-<ul>
-<li>1/4 cup water</li>
-<li>2 Tblsp flour</li>
-<li>1 cup sugar</li>
-<li>6 lg eggs</li>
-<li>1 can evaporated milk</li>
-<li>1 Tblsp vanilla extract</li>
-<li>16 oz sour cream</li>
-<li>3 large bananas, sliced</li>
-<li>1 (16 oz) package of vanilla wafers</li>
-</ul>
-<p>
-Add water to saucepan. Whisk in flour until smooth. Add sugar
-and mix well. Add eggs, one at a time, mixing well after each one.
-Slowly stir in milk, mixing well.</p>
-<p>
-Place pan on low heat. Cook, stirring constantly, until mixture
-is thickened to the consistency of a thick gravy, approximately
-20 minutes. The mixture will start to steam and produce bubbles,
-but you don't want a full boil.</p>
-<p>
-Remove from heat and stir in vanilla. Cool thoroughly. Fold in
-sour cream and mix well.</p>
-<p>
-Layer wafers, bananas, and pudding in a glass serving bowl, such
-as a trifle bowl. Thoroughly chill. Serve with whipped cream.</p>