diff --git a/src/authentication.rkt b/src/authentication.rkt
deleted file mode 100644
index b97ef0e..0000000
--- a/src/authentication.rkt
+++ /dev/null
@@ -1,13 +0,0 @@
-#lang racket/base
-
-(require racket/class)
-
-(provide userdb<%>)
-
-(define userdb<%>
-  (interface ()
-    user-exists? ;; String -> Boolean
-    create-user! ;; String String -> Void
-    reset-user-password! ;; String -> Void
-    credentials-valid? ;; String String -> Boolean
-    ))