Drop link to kit.

README.md

@@ -4,7 +4,7 @@ Bowtie is a small programming language for educational use.
 
 It's a subset of Haskell (in fact a subset of Elm!) with algebraic types, pattern matching, recursive 'let', parametric polymorphism, and not much else.
 
-Bowtie is designed to support a WIP [book](http://lambdakit.com/) and [kit](https://github.com/seagreen/bowtie-kit), but those are at a higher level of concern than the language, so this is the only reference to them in this repo.
+Bowtie is designed to support a WIP [book](http://lambdakit.com/), but those are at a higher level of concern than the language, so this is the only reference to them in this repo.
 
 # In this repo