Remove the word "simple" (#1257)

I'm going to be that guy...

content/docs/render-props.md

@@ -4,7 +4,7 @@ title: Render Props
 permalink: docs/render-props.html
 ---
 
-The term ["render prop"](https://cdb.reacttraining.com/use-a-render-prop-50de598f11ce) refers to a simple technique for sharing code between React components using a prop whose value is a function.
+The term ["render prop"](https://cdb.reacttraining.com/use-a-render-prop-50de598f11ce) refers to a technique for sharing code between React components using a prop whose value is a function.
 
 A component with a render prop takes a function that returns a React element and calls it instead of implementing its own render logic.